# 1998 US Open – Boys' singles

Arnaud Di Pasquale was the defending champion, but did not compete this year.
David Nalbandian won the title by defeating Roger Federer 6–3, 7–5 in the final.

## Seeds

* Julien Jeanpierre (third round)
* Fernando González (quarterfinals)
* Andreas Vinciguerra (first round)
* Roger Federer (final)
* Guillermo Coria (first round)
* Cheng Wei-jen (third round)
* Flávio Saretta (first round)
* Aisam-ul-Haq Qureshi (first round)
* Taylor Dent (third round)
* David Nalbandian (champion)
* José de Armas (first round)
* Ladislav Chramosta (first round)
* Olivier Rochus (third round)
* Lovro Zovko (semifinals)
* Valentin Sanon (third round)
* Andy Ram (quarterfinals)

## 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 |
| 16 | Andy Ram | 6 | 5 | 3 | | | | | | | | | |
| 10 | David Nalbandian | 4 | 7 | 6 | | | | | | | | | |
| 10 | David Nalbandian | 4 | 7 | 6 | 10 | David Nalbandian | 6 | 6 | | | | | |
| | | | | | 14 | Lovro Zovko | 2 | 2 | | | | | |
| 14 | Lovro Zovko | 6 | 3 | 7$^7$ | 14 | Lovro Zovko | 2 | 2 | | | | | |
| | Zack Fleishman | 0 | 6 | 6$^1$ | | | | | | | | | |
| | Zack Fleishman | 0 | 6 | 6$^1$ | | | | | | 10 | David Nalbandian | 6 | 7 |
| | | | | | | | | | | 4 | Roger Federer | 3 | 5 |
| | Jérôme Haehnel | 5 | 6 | 1 | | | | | | | | | | 4 | Roger Federer | 3 | 5 |
| 4 | Roger Federer | 7 | 3 | 6 | | | | | | | | | |
| 4 | Roger Federer | 7 | 3 | 6 | 4 | Roger Federer | 6 | 4 | 6 | | | | |
| | | | | | | Kristian Pless | 3 | 6 | 3 | | | | |
| | Kristian Pless | 6 | 6 | | | Kristian Pless | 3 | 6 | 3 | | | | |
| 2 | Fernando González | 4 | 3 | | | | | | | | | | |

### Top half
#### Section 1

| 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 | Quarterfinals |
| 1 | J Jeanpierre | 6 | 6 | | | | | | | | | | | | | | | |
| | M Boeker | 4 | 3 | | 1 | J Jeanpierre | 6 | 6 | 6 | | | | | | | | | |
| | Jakub Hašek | 6 | 3 | 6 | | J Hašek | 7 | 4 | 2 | | | | | | | | | |
| | Jorge Haro | 3 | 6 | 3 | | | | | | 1 | J Jeanpierre | 3 | 2 | | | | | |
| | A Kedryuk | 2 | 6 | 3 | | | | | | 16 | A Ram | 6 | 6 | | | | | |
| | J Melzer | 6 | 3 | 6 | | J Melzer | 6 | 7 | 4 | | | | | | | | | |
| | Sanzaruz Zaman | 2 | 1 | | 16 | A Ram | 7 | 6 | 6 | | | | | | | | | |
| 16 | A Ram | 6 | 6 | | | | | | | | | | | 16 | A Ram | 6 | 5 | 3 |
| 10 | D Nalbandian | 6 | 6 | | | | | | | | | | | 10 | D Nalbandian | 4 | 7 | 6 |
| | B Veress | 0 | 2 | | 10 | D Nalbandian | 6 | 6 | | | | | | | | | | |
| | L Magdinčev | 6 | 2 | 3 | | R Steckley | 0 | 1 | | | | | | | | | | |
| | R Steckley | 3 | 6 | 6 | | | | | | 10 | D Nalbandian | 6 | 6 | | | | | |
| | M Youzhny | 6 | 6 | | | | | | | | M Youzhny | 3 | 2 | | | | | |
| | Sebastien Aickele | 0 | 2 | | | M Youzhny | 6 | 5 | 7 | | | | | | | | | |
| | Johan Kareld | 6 | 6 | | | J Kareld | 2 | 7 | 5 | | | | | | | | | |
| 7 | F Saretta | 4 | 1 | | | | | | | | | | | | | | | |

#### 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 | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 3 | A Vinciguerra | 6 | 4 | | | | | | | | | | | | | | | | |
| | Bob Borella | 7 | 6 | | | B Borella | 2 | 4 | | | | | | | | | | | |
| | Manoj Mahadevan | 4 | 4 | | | J Nieminen | 6 | 6 | | | | | | | | | | | |
| | J Nieminen | 6 | 6 | | | | | | | | J Nieminen | 7 | 1 | 4 | | | | | |
| | Raimonds Sproga | 6 | 4 | 4 | | | | | | 14 | L Zovko | 6 | 6 | 6 | | | | | |
| | Cyril Martin | 3 | 6 | 6 | | C Martin | 6 | 3 | | | | | | | | | | | |
| | S Lipsky | 4 | 1 | | 14 | L Zovko | 7 | 6 | | | | | | | | | | | |
| 14 | L Zovko | 6 | 6 | | | | | | | | | | | | 14 | L Zovko | 6 | 3 | 7 |
| 11 | J de Armas | 6 | 7 | 3 | | | | | | | | | | | | Z Fleishman | 0 | 6 | 6 |
| | Z Fleishman | 7 | 5 | 6 | | Z Fleishman | 6 | 6 | | | | | | | | | | | |
| | Christian-Michael Straka | 6 | 7 | | | CM Straka | 3 | 3 | | | | | | | | | | | |
| | L Joseph | 3 | 5 | | | | | | | | Z Fleishman | 7 | 6 | | | | | | |
| | Mark Kovacs | 7 | 6 | 3 | | | | | | 6 | W-j Cheng | 5 | 1 | | | | | | |
| | Philipp Hammer | 6 | 7 | 6 | | P Hammer | 7 | 3 | 2 | | | | | | | | | | |
| | Simon Dickson | 6 | 4 | 2 | 6 | W-j Cheng | 5 | 6 | 6 | | | | | | | | | | |
| 6 | Cheng Wei-jen | 3 | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom half
#### Section 3

| 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 | Quarterfinals |
| 5 | G Coria | 4 | 6 | | | | | | | | | | | | | | | |
| | KJ Hippensteel | 6 | 7 | | | KJ Hippensteel | 4 | 6 | 6 | | | | | | | | | |
| | Vijay Kannan | 6 | 6 | | | V Kannan | 6 | 3 | 2 | | | | | | | | | |
| | A Bogomolov Jr. | 3 | 2 | | | | | | | | KJ Hippensteel | 4 | 4 | | | | | |
| | A Kračman | 3 | 6 | 3 | | | | | | | J Haehnel | 6 | 6 | | | | | |
| | M Hilton | 6 | 2 | 6 | | M Hilton | 4 | 4 | | | | | | | | | | |
| | J Haehnel | 6 | 6 | | | J Haehnel | 6 | 6 | | | | | | | | | | |
| 12 | Ladislav Chramosta | 3 | 4 | | | | | | | | | | | | J Haehnel | 5 | 6 | 1 |
| 13 | O Rochus | 3 | 6 | 6 | | | | | | | | | | 4 | R Federer | 7 | 3 | 6 |
| | J Adaktusson | 6 | 2 | 3 | 13 | O Rochus | 6 | 6 | | | | | | | | | | |
| | L Harper-Griffith | 1 | 0 | | | P King | 2 | 3 | | | | | | | | | | |
| | P King | 6 | 6 | | | | | | | 13 | O Rochus | 2 | 5 | | | | | |
| | Stephen Moros | 2 | 2 | | | | | | | 4 | R Federer | 6 | 7 | | | | | |
| | Philip Langer | 6 | 6 | | | P Langer | 3 | 2 | | | | | | | | | | |
| | Boris Bachert | 2 | 2 | | 4 | R Federer | 6 | 6 | | | | | | | | | | |
| 4 | R Federer | 6 | 6 | | | | | | | | | | | | | | | |

#### Section 4

| 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 8 | A Qureshi | 6 | 2 | | | | | | | | | | | | | |
| | K Pless | 7 | 6 | | | K Pless | 6 | 6 | | | | | | | | |
| | Robert Kowalczyk | 7 | 6 | | | R Kowalczyk | 2 | 3 | | | | | | | | |
| | M Fish | 6 | 3 | | | | | | | K Pless | 6 | 6 | | | | |
| | L Pampoulov | 2 | 7 | 6 | | | | | 9 | T Dent | 4 | 2 | | | | |
| | JJ Rojer | 6 | 6 | 3 | | L Pampoulov | 4 | 1 | | | | | | | | |
| | Jiří Vrbka | 4 | 3 | | 9 | T Dent | 6 | 6 | | | | | | | | |
| 9 | T Dent | 6 | 6 | | | | | | | | | | | K Pless | 6 | 6 |
| 15 | V Sanon | 6 | 6 | | | | | | | | | | 2 | F González | 4 | 3 |
| | Ryota Taguchi | 4 | 4 | | 15 | V Sanon | 7 | 6 | | | | | | | | |
| | D Martin | 6 | 6 | | | D Martin | 5 | 0 | | | | | | | | |
| | K Beck | 2 | 4 | | | | | | 15 | V Sanon | 6 | 4 | | | | |
| | Alexander Hartman | 0 | 4 | | | | | | 2 | F González | 7 | 6 | | | | |
| | L Uebel | 6 | 6 | | | L Uebel | 2 | 1 | | | | | | | | |
| | A Roddick | 6 | 4 | 2 | 2 | F González | 6 | 6 | | | | | | | | |
| 2 | F González | 3 | 6 | 6 | | | | | | | | | | | | |