# 2018 Juan Martín del Potro tennis season

The 2018 Juan Martín del Potro tennis season officially commenced on 10 January 2018 with the start of the Delray Beach Open. This season saw Del Potro slightly improve on his previous results as well as his playing style. Highlights from his season includes winning his 400th career match in Indian Wells, where he won the first Masters 1000 title of his career. After he was forced to retire due to a leg injury in the Italian Open, his participation in the French Open was apparently at risk. However, the Argentine managed to recover in time and entered the tournament as the fifth seed. There, he performed notably well considering the doubts surrounding his physical condition, and the fact that clay is not the best surface for his style of play. His run to the semi-finals ensured that, for the first time since February 2014, Delpo would return to his career-best ranking of world No. 4.

## All matches

This table chronicles all the matches of Juan Martín del Potro in 2018, including walkovers (W/O) which the ATP does not count as wins.
Key :
| W | F | SF | QF | #R | RR | Q# | P# | DNQ | A | Z# | PO | G | S | B | NMS | NTI | P | NH |

### Singles matches

| Tournament | Match | Round | Opponent (seed or key) | Rank | Result | Score |
| Auckland Open Auckland, New Zealand ATP Tour 250 Hard, outdoor 8–13 January 2018 |
| Auckland Open Auckland, New Zealand ATP Tour 250 Hard, outdoor 8–13 January 2018 | – | 1R | Bye | Bye | Bye | Bye |
| Auckland Open Auckland, New Zealand ATP Tour 250 Hard, outdoor 8–13 January 2018 | 1 / 541 | 2R | Denis Shapovalov | 50 | Win | 6–2, 6–4 |
| Auckland Open Auckland, New Zealand ATP Tour 250 Hard, outdoor 8–13 January 2018 | 2 / 542 | QF | Karen Khachanov | 47 | Win | 7–6$^{(7–4)}$, 6–3 |
| Auckland Open Auckland, New Zealand ATP Tour 250 Hard, outdoor 8–13 January 2018 | 3 / 543 | SF | David Ferrer (7) | 38 | Win | 6–4, 6–4 |
| Auckland Open Auckland, New Zealand ATP Tour 250 Hard, outdoor 8–13 January 2018 | 4 / 544 | F | Roberto Bautista Agut (5) | 21 | Loss (1) | 1–6, 6–4, 5–7 |
| Australian Open Melbourne, Australia Grand Slam tournament Hard, outdoor 15–28 January 2018 |
| Australian Open Melbourne, Australia Grand Slam tournament Hard, outdoor 15–28 January 2018 | 5 / 545 | 1R | Frances Tiafoe | 81 | Win | 6–3, 6–4, 6–3 |
| Australian Open Melbourne, Australia Grand Slam tournament Hard, outdoor 15–28 January 2018 | 6 / 546 | 2R | Karen Khachanov | 47 | Win | 6–4, 7–6$^{(7–4)}$, 6–7$^{(0–7)}$, 6–4 |
| Australian Open Melbourne, Australia Grand Slam tournament Hard, outdoor 15–28 January 2018 | 7 / 547 | 3R | Tomáš Berdych (19) | 20 | Loss | 3–6, 3–6, 2–6 |
| Delray Beach Open Delray Beach, United States ATP Tour 250 Hard, outdoor 19–25 February 2018 |
| Delray Beach Open Delray Beach, United States ATP Tour 250 Hard, outdoor 19–25 February 2018 | 8 / 548 | 1R | Jérémy Chardy | 96 | Win | 6–2, 6–4 |
| Delray Beach Open Delray Beach, United States ATP Tour 250 Hard, outdoor 19–25 February 2018 | 9 / 549 | 2R | Frances Tiafoe (WC) | 91 | Loss | 6–7$^{(6–8)}$, 6–4, 5–7 |
| Mexican Open Acapulco, Mexico ATP Tour 500 Hard, outdoor 26 February – 3 March 2018 |
| Mexican Open Acapulco, Mexico ATP Tour 500 Hard, outdoor 26 February – 3 March 2018 | 10 / 550 | 1R | Mischa Zverev | 54 | Win | 6–1, 6–2 |
| Mexican Open Acapulco, Mexico ATP Tour 500 Hard, outdoor 26 February – 3 March 2018 | 11 / 551 | 2R | David Ferrer | 39 | Win | 6–4, 4–6, 6–3 |
| Mexican Open Acapulco, Mexico ATP Tour 500 Hard, outdoor 26 February – 3 March 2018 | 12 / 552 | QF | Dominic Thiem (3) | 6 | Win | 6–2, 7–6$^{(9–7)}$ |
| Mexican Open Acapulco, Mexico ATP Tour 500 Hard, outdoor 26 February – 3 March 2018 | 13 / 553 | SF | Alexander Zverev (2) | 5 | Win | 6–4, 6–2 |
| Mexican Open Acapulco, Mexico ATP Tour 500 Hard, outdoor 26 February – 3 March 2018 | 14 / 554 | W | Kevin Anderson (5) | 8 | Win (1) | 6–4, 6–4 |
| Indian Wells Masters Indian Wells, United States ATP Tour Masters 1000 Hard, outdoor 5–18 March 2018 |
| Indian Wells Masters Indian Wells, United States ATP Tour Masters 1000 Hard, outdoor 5–18 March 2018 | – | 1R | Bye | Bye | Bye | Bye |
| Indian Wells Masters Indian Wells, United States ATP Tour Masters 1000 Hard, outdoor 5–18 March 2018 | 15 / 555 | 2R | Alex de Minaur (WC) | 141 | Win | 6–2, 6–1 |
| Indian Wells Masters Indian Wells, United States ATP Tour Masters 1000 Hard, outdoor 5–18 March 2018 | 16 / 556 | 3R | David Ferrer (29) | 33 | Win | 6–4, 7–6$^{(7–3)}$ |
| Indian Wells Masters Indian Wells, United States ATP Tour Masters 1000 Hard, outdoor 5–18 March 2018 | 17 / 557 | 4R | Leonardo Mayer | 47 | Win | 3–6, 7–6$^{(7–2)}$, 6–3 |
| Indian Wells Masters Indian Wells, United States ATP Tour Masters 1000 Hard, outdoor 5–18 March 2018 | 18 / 558 | QF | Philipp Kohlschreiber (31) | 37 | Win | 3–6, 6–3, 6–4 |
| Indian Wells Masters Indian Wells, United States ATP Tour Masters 1000 Hard, outdoor 5–18 March 2018 | 19 / 559 | SF | Milos Raonic (32) | 38 | Win | 6–2, 6–3 |
| Indian Wells Masters Indian Wells, United States ATP Tour Masters 1000 Hard, outdoor 5–18 March 2018 | 20 / 560 | W | Roger Federer (1) | 1 | Win (2) | 6–4, 6–7$^{(8–10)}$, 7–6$^{(7–2)}$ |
| Miami Open Miami, United States ATP Tour Masters 1000 Hard, outdoor 19 March – 1 April 2018 |
| Miami Open Miami, United States ATP Tour Masters 1000 Hard, outdoor 19 March – 1 April 2018 | – | 1R | Bye | Bye | Bye | Bye |
| Miami Open Miami, United States ATP Tour Masters 1000 Hard, outdoor 19 March – 1 April 2018 | 21 / 561 | 2R | Robin Haase | 44 | Win | 6–4, 5–7, 6–2 |
| Miami Open Miami, United States ATP Tour Masters 1000 Hard, outdoor 19 March – 1 April 2018 | 22 / 562 | 3R | Kei Nishikori (26) | 33 | Win | 6–2, 6–2 |
| Miami Open Miami, United States ATP Tour Masters 1000 Hard, outdoor 19 March – 1 April 2018 | 23 / 563 | 4R | Filip Krajinović (22) | 27 | Win | 6–4, 6–2 |
| Miami Open Miami, United States ATP Tour Masters 1000 Hard, outdoor 19 March – 1 April 2018 | 24 / 564 | QF | Milos Raonic (20) | 25 | Win | 5–7, 7–6$^{(7–1)}$, 7–6$^{(7–3)}$ |
| Miami Open Miami, United States ATP Tour Masters 1000 Hard, outdoor 19 March – 1 April 2018 | 25 / 565 | SF | John Isner (14) | 17 | Loss | 1–6, 6–7$^{(2–7)}$ |
| Madrid Open Madrid, Spain ATP Tour Masters 1000 Clay, outdoor 7–13 May 2018 |
| Madrid Open Madrid, Spain ATP Tour Masters 1000 Clay, outdoor 7–13 May 2018 | – | 1R | Bye | Bye | Bye | Bye |
| Madrid Open Madrid, Spain ATP Tour Masters 1000 Clay, outdoor 7–13 May 2018 | 26 / 566 | 2R | Damir Džumhur | 32 | Win | 6–3, 6–3 |
| Madrid Open Madrid, Spain ATP Tour Masters 1000 Clay, outdoor 7–13 May 2018 | 27 / 567 | 3R | Dušan Lajović (Q) | 95 | Loss | 6–3, 4–6, 6–7$^{(6–8)}$ |
| Italian Open Rome, Italy ATP Tour Masters 1000 Clay, outdoor 14–20 May 2018 |
| Italian Open Rome, Italy ATP Tour Masters 1000 Clay, outdoor 14–20 May 2018 | – | 1R | Bye | Bye | Bye | Bye |
| Italian Open Rome, Italy ATP Tour Masters 1000 Clay, outdoor 14–20 May 2018 | 28 / 568 | 2R | Stefanos Tsitsipas (Q) | 43 | Win | 7–5, 6–3 |
| Italian Open Rome, Italy ATP Tour Masters 1000 Clay, outdoor 14–20 May 2018 | 29 / 569 | 3R | David Goffin (9) | 10 | Loss | 2–6, 5–4 ret. |
| French Open Paris, France Grand Slam tournament Clay, outdoor 28 May – 10 June 2018 |
| French Open Paris, France Grand Slam tournament Clay, outdoor 28 May – 10 June 2018 | 30 / 570 | 1R | Nicolas Mahut (WC) | 116 | Win | 1–6, 6–1, 6–2, 6–4 |
| French Open Paris, France Grand Slam tournament Clay, outdoor 28 May – 10 June 2018 | 31 / 571 | 2R | Julien Benneteau | 62 | Win | 6–4, 6–3, 6–2 |
| French Open Paris, France Grand Slam tournament Clay, outdoor 28 May – 10 June 2018 | 32 / 572 | 3R | Albert Ramos Viñolas (31) | 36 | Win | 7–5, 6–4, 6–1 |
| French Open Paris, France Grand Slam tournament Clay, outdoor 28 May – 10 June 2018 | 33 / 573 | 4R | John Isner (9) | 10 | Win | 6–4, 6–4, 6–4 |
| French Open Paris, France Grand Slam tournament Clay, outdoor 28 May – 10 June 2018 | 34 / 574 | QF | Marin Čilić (3) | 4 | Win | 7–6$^{(7–5)}$, 5–7, 6–3, 7–5 |
| French Open Paris, France Grand Slam tournament Clay, outdoor 28 May – 10 June 2018 | 35 / 575 | SF | Rafael Nadal (1) | 1 | Loss | 4–6, 1–6, 2–6 |
| Wimbledon Championships London, United Kingdom Grand Slam tournament Grass, outdoor 2–15 July 2018 |
| Wimbledon Championships London, United Kingdom Grand Slam tournament Grass, outdoor 2–15 July 2018 | 36 / 576 | 1R | Peter Gojowczyk | 39 | Win | 6–3, 6–4, 6–3 |
| Wimbledon Championships London, United Kingdom Grand Slam tournament Grass, outdoor 2–15 July 2018 | 37 / 577 | 2R | Feliciano López | 70 | Win | 6–4, 6–1, 6–2 |
| Wimbledon Championships London, United Kingdom Grand Slam tournament Grass, outdoor 2–15 July 2018 | 38 / 578 | 3R | Benoît Paire | 47 | Win | 6–4, 7–6$^{(7–4)}$, 6–3 |
| Wimbledon Championships London, United Kingdom Grand Slam tournament Grass, outdoor 2–15 July 2018 | 39 / 579 | 4R | Gilles Simon | 53 | Win | 7–6$^{(7–1)}$, 7–6$^{(7–5)}$, 5–7, 7–6$^{(7–5)}$ |
| Wimbledon Championships London, United Kingdom Grand Slam tournament Grass, outdoor 2–15 July 2018 | 40 / 580 | QF | Rafael Nadal (2) | 1 | Loss | 5–7, 7–6$^{(9–7)}$, 6–4, 4–6, 4–6 |
| Los Cabos Open Los Cabos, Mexico ATP Tour 250 Hard, outdoor 30 July – 5 August 2018 |
| Los Cabos Open Los Cabos, Mexico ATP Tour 250 Hard, outdoor 30 July – 5 August 2018 | – | 1R | Bye | Bye | Bye | Bye |
| Los Cabos Open Los Cabos, Mexico ATP Tour 250 Hard, outdoor 30 July – 5 August 2018 | 41 / 581 | 2R | Marcos Giron (Q) | 446 | Win | 7–5, 6–3 |
| Los Cabos Open Los Cabos, Mexico ATP Tour 250 Hard, outdoor 30 July – 5 August 2018 | 42 / 582 | QF | Egor Gerasimov (PR) | 301 | Win | 6–1, 6–1 |
| Los Cabos Open Los Cabos, Mexico ATP Tour 250 Hard, outdoor 30 July – 5 August 2018 | 43 / 583 | SF | Damir Džumhur (3) | 24 | Win | 6–3, 7–6$^{(8–6)}$ |
| Los Cabos Open Los Cabos, Mexico ATP Tour 250 Hard, outdoor 30 July – 5 August 2018 | 44 / 584 | F | Fabio Fognini (2) | 15 | Loss (2) | 4–6, 2–6 |
| Canadian Open Toronto, Canada ATP Tour Masters 1000 Hard, outdoor 6–12 August 2018 |
| Withdrew ||||||
| Cincinnati Masters Cincinnati, United States ATP Tour Masters 1000 Hard, outdoor 13–19 August 2018 |
| Cincinnati Masters Cincinnati, United States ATP Tour Masters 1000 Hard, outdoor 13–19 August 2018 | – | 1R | Bye | Bye | Bye | Bye |
| Cincinnati Masters Cincinnati, United States ATP Tour Masters 1000 Hard, outdoor 13–19 August 2018 | 45 / 585 | 2R | Chung Hyeon | 25 | Win | 6–2, 6–3 |
| Cincinnati Masters Cincinnati, United States ATP Tour Masters 1000 Hard, outdoor 13–19 August 2018 | 46 / 586 | 3R | Nick Kyrgios (15) | 18 | Win | 7–6$^{(7–4)}$, 6–7$^{(6–8)}$, 6–2 |
| Cincinnati Masters Cincinnati, United States ATP Tour Masters 1000 Hard, outdoor 13–19 August 2018 | 47 / 587 | QF | David Goffin (11) | 11 | Loss | 6–7$^{(5–7)}$, 6–7$^{(4–7)}$ |
| US Open New York City, United States Grand Slam tournament Hard, outdoor 27 August – 9 September 2018 |
| US Open New York City, United States Grand Slam tournament Hard, outdoor 27 August – 9 September 2018 | 48 / 588 | 1R | Donald Young (Q) | 246 | Win | 6–0, 6–3, 6–4 |
| US Open New York City, United States Grand Slam tournament Hard, outdoor 27 August – 9 September 2018 | 49 / 589 | 2R | Denis Kudla | 72 | Win | 6–3, 6–1, 7–6$^{(7–4)}$ |
| US Open New York City, United States Grand Slam tournament Hard, outdoor 27 August – 9 September 2018 | 50 / 590 | 3R | Fernando Verdasco (31) | 32 | Win | 7–5, 7–6$^{(8–6)}$, 6–3 |
| US Open New York City, United States Grand Slam tournament Hard, outdoor 27 August – 9 September 2018 | 51 / 591 | 4R | Borna Ćorić (20) | 20 | Win | 6–4, 6–3, 6–1 |
| US Open New York City, United States Grand Slam tournament Hard, outdoor 27 August – 9 September 2018 | 52 / 592 | QF | John Isner (11) | 11 | Win | 6–7$^{(5–7)}$, 6–3, 7–6$^{(7–4)}$, 6–2 |
| US Open New York City, United States Grand Slam tournament Hard, outdoor 27 August – 9 September 2018 | 53 / 593 | SF | Rafael Nadal (1) | 1 | Win | 7–6$^{(7–3)}$, 6–2 ret. |
| US Open New York City, United States Grand Slam tournament Hard, outdoor 27 August – 9 September 2018 | 54 / 594 | F | Novak Djokovic (6) | 6 | Loss (3) | 3–6, 6–7$^{(4–7)}$, 3–6 |
| China Open Beijing, China ATP Tour 500 Hard, outdoor 1–7 October 2018 |
| China Open Beijing, China ATP Tour 500 Hard, outdoor 1–7 October 2018 | 55 / 595 | 1R | Albert Ramos Viñolas | 50 | Win | 7–5, 6–2 |
| China Open Beijing, China ATP Tour 500 Hard, outdoor 1–7 October 2018 | 56 / 596 | 2R | Karen Khachanov | 24 | Win | 6–4, 7–6$^{(7–4)}$ |
| China Open Beijing, China ATP Tour 500 Hard, outdoor 1–7 October 2018 | 57 / 597 | QF | Filip Krajinović | 36 | Win | 6–3, 6–0 |
| China Open Beijing, China ATP Tour 500 Hard, outdoor 1–7 October 2018 | – | SF | Fabio Fognini (4) | 13 | Walkover | N/A |
| China Open Beijing, China ATP Tour 500 Hard, outdoor 1–7 October 2018 | 58 / 598 | F | Nikoloz Basilashvili | 34 | Loss (4) | 4–6, 4–6 |
| Shanghai Masters Shanghai, China ATP Tour Masters 1000 Hard, outdoor 7–14 October 2018 |
| Shanghai Masters Shanghai, China ATP Tour Masters 1000 Hard, outdoor 7–14 October 2018 | – | 1R | Bye | Bye | Bye | Bye |
| Shanghai Masters Shanghai, China ATP Tour Masters 1000 Hard, outdoor 7–14 October 2018 | 59 / 599 | 2R | Richard Gasquet | 25 | Win | 7–5, 7–6$^{(9–7)}$ |
| Shanghai Masters Shanghai, China ATP Tour Masters 1000 Hard, outdoor 7–14 October 2018 | 60 / 600 | 3R | Borna Ćorić (13) | 19 | Loss | 5–7 ret. |

### Doubles matches

| Tournament | Match | Round | Opponents (seed or key) | Ranks | Result | Score |
| Indian Wells Masters Indian Wells, United States ATP Tour Masters 1000 Hard, outdoor 5–18 March 2018 Partner: Grigor Dimitrov |
| Indian Wells Masters Indian Wells, United States ATP Tour Masters 1000 Hard, outdoor 5–18 March 2018 Partner: Grigor Dimitrov | 1 / 78 | 1R | Feliciano López / Marc López | 26 / 23 | Loss | 4–6, 2–6 |
| Madrid Open Madrid, Spain ATP Tour Masters 1000 Clay, outdoor 7–13 May 2018 Partner: Dominic Thiem |
| Madrid Open Madrid, Spain ATP Tour Masters 1000 Clay, outdoor 7–13 May 2018 Partner: Dominic Thiem | 2 / 79 | 1R | Pablo Cuevas / Marcel Granollers | 29 / 19 | Loss | 3–6, 6–7$^{(8–10)}$ |
| Italian Open Rome, Italy ATP Tour Masters 1000 Clay, outdoor 14–20 May 2018 Partner: Leonardo Mayer |
| Italian Open Rome, Italy ATP Tour Masters 1000 Clay, outdoor 14–20 May 2018 Partner: Leonardo Mayer | 3 / 80 | 1R | Simone Bolelli / Fabio Fognini | 123 / 75 | Win | 6–4, 1–6, [11–9] |
| Italian Open Rome, Italy ATP Tour Masters 1000 Clay, outdoor 14–20 May 2018 Partner: Leonardo Mayer | 4 / 81 | 2R | Feliciano López / Marc López | 28 / 24 | Withdrew | N/A |

## Schedule
### Singles schedule

| Date | Tournament | Location | Category | Surface | Prev. result | Prev. points | New points | Result |
| 8 January 2018– 13 January 2018 | Auckland Open | Auckland (NZL) | 250 Series | Hard | A | N/A | 150 | Final (lost to Roberto Bautista Agut, 1–6, 6–4, 5–7) |
| 15 January 2018– 28 January 2018 | Australian Open | Melbourne (AUS) | Grand Slam | Hard | A | N/A | 90 | Third round (lost to Tomáš Berdych, 3–6, 3–6, 2–6) |
| 19 February 2018– 25 February 2018 | Delray Beach Open | Delray Beach (USA) | 250 Series | Hard | SF | 90 | 20 | Second round (lost to Frances Tiafoe, 6–7$^{(6–8)}$, 6–4, 5–7) |
| 26 February 2018– 3 March 2018 | Mexican Open | Acapulco (MEX) | 500 Series | Hard | 2R | 45 | 500 | Champion (defeated Kevin Anderson, 6–4, 6–4) |
| 5 March 2018– 18 March 2018 | Indian Wells Masters | Indian Wells (USA) | Masters 1000 | Hard | 3R | 45 | 1000 | Champion (defeated Roger Federer, 6–4, 6–7$^{(8–10)}$, 7–6$^{(7–2)}$) |
| 19 March 2018– 1 April 2018 | Miami Open | Miami (USA) | Masters 1000 | Hard | 3R | 45 | 360 | Semifinals (lost to John Isner, 1–6 6–7$^{(2–7)}$) |
| 7 May 2018– 13 May 2018 | Madrid Open | Madrid (ESP) | Masters 1000 | Clay | A | N/A | 90 | Third round (lost to Dušan Lajović, 6–3, 4–6, 6–7$^{(6–8)}$) |
| 14 May 2018– 20 May 2018 | Italian Open | Rome (ITA) | Masters 1000 | Clay | QF | 180 | 90 | Third round (lost to David Goffin, 2–6, 5–4 ret.) |
| 28 May 2018– 10 June 2018 | French Open | Paris (FRA) | Grand Slam | Clay | 3R | 90 | 720 | Semifinals (lost to Rafael Nadal, 4–6, 1–6, 2–6) |
| 2 July 2018– 15 July 2018 | Wimbledon | London (GBR) | Grand Slam | Grass | 2R | 45 | 360 | Quarter-finals (lost to Rafael Nadal, 5–7, 7–6$^{(9–7)}$, 6–4, 4–6, 4–6) |
| 30 July 2018– 5 August 2018 | Los Cabos Open | Los Cabos (MEX) | 250 Series | Hard | A | N/A | 150 | Final (lost to Fabio Fognini, 4–6, 2–6) |
| 6 August 2018– 12 August 2018 | Canadian Open | Toronto (CAN) | Masters 1000 | Hard | 2R | 45 | 0 | Withdrew due to left wrist injury |
| 13 August 2018– 19 August 2018 | Cincinnati Masters | Cincinnati (USA) | Masters 1000 | Hard | 3R | 90 | 180 | Quarter-finals (lost to David Goffin, 6–7$^{(5–7)}$, 6–7$^{(4–7)}$) |
| 27 August 2018– 9 September 2018 | US Open | New York (USA) | Grand Slam | Hard | SF | 720 | 1200 | Final (lost to Novak Djokovic, 3–6, 6–7$^{(4–7)}$, 3–6) |
| 1 October 2018– 7 October 2018 | China Open | Beijing (CHN) | 500 Series | Hard | 2R | 45 | 300 | Final (lost to Nikoloz Basilashvili, 6–4, 6–4) |
| 8 October 2018– 14 October 2018 | Shanghai Masters | Shanghai (CHN) | Masters 1000 | Hard | SF | 360 | 90 | Third round (lost to Borna Ćorić, 5–7 ret.) |
| 22 October 2018– 28 October 2018 | Swiss Indoors | Basel (SUI) | 500 Series | Hard (i) | F | 300 | 0 | Withdrew due to right knee injury |
| 11 November 2018– 18 November 2018 | ATP Finals | London (GBR) | Tour Finals | Hard (i) | A | N/A | 0 | Withdrew due to fractured patella |
| Race to London points as of Shanghai Open | Race to London points as of Shanghai Open | Race to London points as of Shanghai Open | Race to London points as of Shanghai Open | Race to London points as of Shanghai Open | Race to London points as of Shanghai Open | 2350 | 5300 | 3500 difference |
| Total year-end points | Total year-end points | Total year-end points | Total year-end points | Total year-end points | Total year-end points | 2615 | | |

### Doubles schedule

| Date | Championship | Location | Category | Surface | Prev. result | Prev. points | New points | Outcome |
| 5 March 2018– 18 March 2018 | Indian Wells Masters | Indian Wells (USA) | Masters 1000 | Hard | 1R | 0 | 0 | First round (lost to López / López, 4–6, 2–6) |
| 7 May 2018– 13 May 2018 | Madrid Open | Madrid (ESP) | Masters 1000 | Clay | A | N/A | 0 | First round (lost to Cuevas / Granollers, 3–6, 6–7$^{(8–10)}$) |
| 14 May 2018– 20 May 2018 | Italian Open | Rome (ITA) | Masters 1000 | Clay | 1R | 0 | 90 | Second round (withdrew to López / López) |
| Total year-end points | Total year-end points | Total year-end points | Total year-end points | Total year-end points | Total year-end points | 0 | 90 | 90 difference |

## Yearly records
### ATP and Grand Slam sanctioned matches

Juan Martín del Potro has a 47–13 ATP match win–loss record in the 2018 season. His record against players who were part of the ATP rankings Top Ten at the time of their meetings is 7–4. Bold indicates player was ranked top 10 at time of at least one meeting. The following list is ordered by number of wins:
* David Ferrer 3–0
* Karen Khachanov 3–0
* John Isner 2–1
* Damir Džumhur 2–0
* Filip Krajinović 2–0
* Albert Ramos Viñolas 2–0
* Milos Raonic 2–0
* Borna Ćorić 1–1
* Frances Tiafoe 1–1
* Kevin Anderson 1–0
* Julien Benneteau 1–0
* Jérémy Chardy 1–0
* Marin Čilić 1–0
* Alex de Minaur 1–0
* Roger Federer 1–0
* Richard Gasquet 1–0
* Egor Gerasimov 1–0
* Marcos Giron 1–0
* Peter Gojowczyk 1–0
* Robin Haase 1–0
* Chung Hyeon 1–0
* Philipp Kohlschreiber 1–0
* Denis Kudla 1–0
* Nick Kyrgios 1–0
* Feliciano López 1–0
* Nicolas Mahut 1–0
* Leonardo Mayer 1–0
* Kei Nishikori 1–0
* Benoît Paire 1–0
* Denis Shapovalov 1–0
* Gilles Simon 1–0
* Dominic Thiem 1–0
* Stefanos Tsitsipas 1–0
* Fernando Verdasco 1–0
* Donald Young 1–0
* Alexander Zverev 1–0
* Mischa Zverev 1–0
* Nikoloz Basilashvili 0–1
* Roberto Bautista Agut 0–1
* Tomáš Berdych 0–1
* Novak Djokovic 0–1
* Fabio Fognini 0–1
* Dušan Lajović 0–1
* Rafael Nadal 1–2
* David Goffin 0–2

### Finals
#### Singles: 6 (2 titles, 4 runner-up)

* Category
* Grand Slam (0–1)
* ATP Finals (0–0)
* ATP World Tour Masters 1000 (1–0)
* ATP World Tour 500 (1–1)
* ATP World Tour 250 (0–2)
* Titles by surface
* Hard (2–4)
* Clay (0–0)
* Grass (0–0)
* Titles by setting
* Outdoor (2–4)
* Indoor (0–0)
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
| Loss | 0–1 | Jan 2018 | Auckland Open, New Zealand | 250 Series | Hard | Roberto Bautista Agut | 1–6, 6–4, 5–7 |
| Win | 1–1 | Mar 2018 | Mexican Open, Mexico | 500 Series | Hard | Kevin Anderson | 6–4, 6–4 |
| Win | 2–1 | Mar 2018 | Indian Wells Masters, United States | Masters 1000 | Hard | Roger Federer | 6–4, 6–7$^{(8–10)}$, 7–6$^{(7–2)}$ |
| Loss | 2–2 | Aug 2018 | Los Cabos Open, Mexico | 250 Series | Hard | Fabio Fognini | 4–6, 2–6 |
| Loss | 2–3 | Aug 2018 | US Open, United States | Grand Slam | Hard | Novak Djokovic | 3–6, 6–7$^{(4–7)}$, 3–6 |
| Loss | 2–4 | Oct 2018 | China Open, China | 500 Series | Hard | Nikoloz Basilashvili | 4–6, 4–6 |

### Earnings

* Bold font denotes tournament win
| Event | Prize money | Year-to-date |
| Auckland Open | $47,105 | $47,105 |
| Australian Open | A$142,500 | $159,851 |
| Delray Beach Open | $9,030 | $168,881 |
| Mexican Open | $354,130 | $523,011 |
| Indian Wells Masters | $1,340,860 | $1,863,871 |
| Miami Open | $327,965 | $2,191,836 |
| Madrid Open | €77,575 | $2,296,214 |
| Italian Open | €60,945 | $2,357,370 |
| French Open | €560,000 | $3,009,770 |
| Wimbledon | £281,000 | $3,380,746 |
| Los Cabos Open | $67,220 | $3,447,966 |
| Cincinnati Masters | $136,580 | $3,619,601 |
| US Open | $1,850,000 | $5,469,601 |
| China Open | $359,510 | $5,829,111 |
| Shanghai Open | $88,655 | $5,917,766 |
| | | $5,917,766 |
Figures in United States dollars (USD) unless noted.