# 2020 Ann Arbor Challenger – Singles

This was the first edition of the tournament.
Ulises Blanch won the title after defeating Roberto Cid Subervi 3–6, 6–4, 6–2 in the final.

## Seeds

All seeds receive a bye into the second round.
* Bjorn Fratangelo (quarterfinals)
* Noah Rubin (second round)
* Sebastian Korda (second round)
* Roberto Cid Subervi (final)
* Ruben Bemelmans (second round)
* Renzo Olivo (second round)
* Roberto Quiroz (quarterfinals)
* JC Aragone (quarterfinals)
* Nino Serdarušić (third round)
* Daniel Altmaier (semifinals)
* Kaichi Uchida (second round)
* Kevin King (second round)
* Pedro Sakamoto (third round)
* Michael Redlicki (second round)
* Sekou Bangoura (third round)
* Thomaz Bellucci (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Bjorn Fratangelo | 6$^4$ | 2 | | | | | | | | | | | |
| | Stefan Kozlov | 7$^7$ | 6 | | | | | | | | | | | |
| | Stefan Kozlov | 7$^7$ | 6 | | | Stefan Kozlov | 6$^1$ | 7 | 3 | | | | | |
| | | | | | 4 | Roberto Cid Subervi | 7$^7$ | 5 | 6 | | | | | |
| 4 | Roberto Cid Subervi | 6 | 6 | | 4 | Roberto Cid Subervi | 7$^7$ | 5 | 6 | | | | | |
| 7 | Roberto Quiroz | 4 | 4 | | | | | | | | | | | |
| 7 | Roberto Quiroz | 4 | 4 | | | | | | | 4 | Roberto Cid Subervi | 6 | 4 | 2 |
| | | | | | | | | | | | Ulises Blanch | 3 | 6 | 6 |
| 10 | Daniel Altmaier | 7$^7$ | 7 | | | | | | | | | | | | Ulises Blanch | 3 | 6 | 6 |
| | Edan Leshem | 6$^4$ | 5 | | | | | | | | | | | |
| | Edan Leshem | 6$^4$ | 5 | | 10 | Daniel Altmaier | 3 | 4 | | | | | | |
| | | | | | | Ulises Blanch | 6 | 6 | | | | | | |
| 8 | JC Aragone | 5 | 7 | 2 | | Ulises Blanch | 6 | 6 | | | | | | |
| | Ulises Blanch | 7 | 5 | 6 | | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | B Fratangelo | 6 | 6 | | | | | | | | | |
| | D Hidalgo | 6 | 5 | 3 | | G Elias | 3 | 3 | | | | | | | | | |
| | G Elias | 2 | 7 | 6 | | | | | 1 | B Fratangelo | 6 | 6 | | | | | |
| | L Glasspool | 4 | 1 | | | | | | WC | J McNally | 3 | 3 | | | | | |
| WC | J McNally | 6 | 6 | | WC | J McNally | 6 | 6 | | | | | | | | | |
| | | | | | 16 | T Bellucci | 3 | 4 | | | | | | | | | |
| | | | | | | | | | | | | | | 1 | B Fratangelo | 6$^4$ | 2 |
| | | | | | | | | | | | | | | | S Kozlov | 7$^7$ | 6 |
| | | | | | 12 | K King | 3 | 6$^2$ | | | | | | | | | |
| | R Roumane | 2 | 2 | | | B Nakashima | 6 | 7$^7$ | | | | | | | | | |
| | B Nakashima | 6 | 6 | | | | | | | B Nakashima | 6 | 3 | 2 | | | | |
| | S Kozlov | 6 | 6 | | | | | | | S Kozlov | 4 | 6 | 6 | | | | |
| | A Rinderknech | 3 | 4 | | | S Kozlov | 7$^7$ | 6 | | | | | | | | | |
| | | | | | 6 | R Olivo | 6$^2$ | 2 | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | R Cid Subervi | 6$^4$ | 6 | 7$^{15}$ | | | | | | | | |
| | A Velotti | 6 | 6 | | | A Velotti | 7$^7$ | 2 | 6$^{13}$ | | | | | | | | |
| PR | N Barrientos | 4 | 3 | | | | | | | 4 | R Cid Subervi | 6 | 6 | | | | |
| Q | A Gómez | 3 | 7$^7$ | 6$^4$ | | | | | | 15 | S Bangoura | 4 | 4 | | | | |
| | Ma Redlicki | 6 | 6$^4$ | 7$^7$ | | Ma Redlicki | 6$^8$ | 3 | | | | | | | | | |
| | | | | | 15 | S Bangoura | 7$^{10}$ | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | 4 | R Cid Subervi | 6 | 6 |
| | | | | | | | | | | | | | | 7 | R Quiroz | 4 | 4 |
| | | | | | 9 | N Serdarušić | 3 | | | | | | | | | | |
| | A Bega | 1 | 4 | | | C Hemery | 1$^r$ | | | | | | | | | | |
| | C Hemery | 6 | 6 | | | | | | | 9 | N Serdarušić | 5 | 6$^5$ | | | | |
| | Tobias Simon | 6 | 6 | | | | | | | 7 | R Quiroz | 7 | 7$^7$ | | | | |
| | E King | 4 | 2 | | | T Simon | 4 | 7$^{10}$ | 6$^4$ | | | | | | | | |
| | | | | | 7 | R Quiroz | 6 | 6$^8$ | 7$^7$ | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | 5 | R Bemelmans | 2 | 4 | | | | | | | | | | |
| WC | A Kovacevic | 7$^7$ | 6 | WC | A Kovacevic | 6 | 6 | | | | | | | | | | |
| | N Chappell | 6$^4$ | 2 | | | | | | WC | A Kovacevic | 7 | 6$^4$ | 3 | | | | |
| | A Avidzba | 6 | 6 | | | | | | 10 | D Altmaier | 5 | 7$^7$ | 6 | | | | |
| | Evan Song | 4 | 4 | | A Avidzba | 4 | 7$^8$ | 3 | | | | | | | | | |
| | | | | 10 | D Altmaier | 6 | 6$^6$ | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | 10 | D Altmaier | 7$^7$ | 7 |
| | | | | | | | | | | | | | | | E Leshem | 6$^4$ | 5 |
| | | | | 13 | P Sakamoto | 6 | 7$^9$ | | | | | | | | | | |
| | B Lock | 3 | 5 | | A Zakharov | 2 | 6$^7$ | | | | | | | | | | |
| | A Zakharov | 6 | 7 | | | | | | 13 | P Sakamoto | 6 | 3 | 5 | | | | |
| | E Leshem | 6 | 6 | | | | | | | E Leshem | 4 | 6 | 7 | | | | |
| | J Ocleppo | 4 | 3 | | E Leshem | 7 | 6 | | | | | | | | | | |
| | | | | 3 | S Korda | 5 | 3 | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | JC Aragone | 6 | 6 | | | | | | | | | | | |
| WC | O Štyler | 6$^4$ | 6$^5$ | | WC | A Fenty | 1 | 4 | | | | | | | | | | | |
| WC | Andrew Fenty | 7$^7$ | 7$^7$ | | | | | | | 8 | JC Aragone | 3 | 6 | 6 | | | | | |
| | Lucas Gerch | 6 | 6 | | | | | | | | L Gerch | 6 | 4 | 4 | | | | | |
| WC | Z Svajda | 3 | 3 | | | L Gerch | 7$^7$ | 7 | | | | | | | | | | | |
| | | | | | 11 | K Uchida | 6$^2$ | 5 | | | | | | | | | | | |
| | | | | | | | | | | | | | | | 8 | JC Aragone | 5 | 7 | 2 |
| | | | | | | | | | | | | | | | | U Blanch | 7 | 5 | 6 |
| | | | | | 14 | Mi Redlicki | 6 | 2 | 3 | | | | | | | | | | |
| | JM Cerúndolo | 6$^4$ | 7 | 5 | PR | P Kypson | 3 | 6 | 6 | | | | | | | | | | |
| PR | P Kypson | 7$^7$ | 5 | 7 | | | | | | PR | P Kypson | 6$^2$ | 2 | | | | | | |
| Q | S Kirchheimer | 3 | 6$^6$ | | | | | | | | U Blanch | 7$^7$ | 6 | | | | | | |
| | U Blanch | 6 | 7$^8$ | | | U Blanch | 7 | 7$^7$ | | | | | | | | | | | |
| | | | | | 2 | N Rubin | 5 | 6$^4$ | | | | | | | | | | | |