# 1940 U.S. National Championships – Men's singles

Donald McNeill defeated Bobby Riggs 4–6, 6–8, 6–3, 6–3, 7–5 in the final to win the men's singles tennis title at the 1940 U.S. National Championships.

## Seeds

The seeded players are listed below. Donald McNeill is the champion; others show the round in which they were eliminated.
* Bobby Riggs (finalist)
* Donald McNeill (champion)
* Francis Kovacs (quarterfinals)
* Frank Parker (quarterfinals)
* Joseph Hunt (semifinals)
* Henry Prusoff (fourth round)
* Bryan Grant (fourth round)
* Elwood Cooke (quarterfinals)
* Gardnar Mulloy (first round)
* Welby Van Horn (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* r = Retired

### Final eight

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final | Final | Final |
| 5 | Joseph Hunt | 6 | 6 | 6 | | | | | | | | | | | | | | | | |
| 3 | Francis Kovacs | 4 | 1 | 4 | | | | | | | | | | | | | | | | |
| 3 | Francis Kovacs | 4 | 1 | 4 | | | 5 | Joseph Hunt | 6 | 3 | 7 | 3 | 4 | | | | | | | |
| | | | | | | | 1 | Bobby Riggs | 4 | 6 | 5 | 6 | 6 | | | | | | | |
| | Ted Schroeder | 1 | 7 | 3 | 4 | | 1 | Bobby Riggs | 4 | 6 | 5 | 6 | 6 | | | | | | | |
| 1 | Bobby Riggs | 6 | 5 | 6 | 6 | | | | | | | | | | | | | | | |
| 1 | Bobby Riggs | 6 | 5 | 6 | 6 | | | | | | | | | 1 | Bobby Riggs | 6 | 8 | 3 | 3 | 5 |
| | | | | | | | | | | | | | | 2 | Donald McNeill | 4 | 6 | 6 | 6 | 7 |
| | Jack Kramer | 1 | 6 | 3 | 6 | 6 | | | | | | | | | | | | | | | 2 | Donald McNeill | 4 | 6 | 6 | 6 | 7 |
| 4 | Frank Parker | 6 | 1 | 6 | 3 | 1 | | | | | | | | | | | | | | |
| 4 | Frank Parker | 6 | 1 | 6 | 3 | 1 | | Jack Kramer | 1 | 7 | 4 | 3 | | | | | | | | |
| | | | | | | | 2 | Donald McNeill | 6 | 5 | 6 | 6 | | | | | | | | |
| 8 | Elwood Cooke | 7 | 8 | 4 | 3 | | 2 | Donald McNeill | 6 | 5 | 6 | 6 | | | | | | | | |
| 2 | Donald McNeill | 9 | 6 | 6 | 6 | | | | | | | | | | | | | | | |

### Earlier rounds
#### Section 1

| Second round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| | Carver | 6 | 6 | 4 | 6 | | | | | | | | | | | | | | |
| | Lyttleton-Rogers | 3 | 8 | 6 | 8 | | | | | | | | | | | | | | |
| | | | | | | | | Lyttleton-Rogers | 6 | 6 | 3 | 4 | 4 | | | | | | |
| | | | | | | | | Bowden | 4 | 4 | 6 | 6 | 6 | | | | | | |
| | Bellis | 1 | 4 | 6 | 6 | 6 | | | | | | | | | | | | | |
| | Bowden | 6 | 6 | 2 | 1 | 8 | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | Bowden | 1 | 8 | 1 | 6 |
| | | | | | | | | | | | | | | 5 | Hunt | 6 | 6 | 6 | 8 |
| | Aguirre | 0 | 1 | 2 | | | | | | | | | | | | | | | |
| | Buxby | 6 | 6 | 6 | | | | | | | | | | | | | | | |
| | | | | | | | | Buxby | 5 | 6 | 4 | 1 | | | | | | | |
| | | | | | | | 5 | Hunt | 7 | 3 | 6 | 6 | | | | | | | |
| | Ganzenmuller | 1 | 1 | 6 | | | | | | | | | | | | | | | |
| 5 | Hunt | 6 | 6 | 8 | | | | | | | | | | | | | | | |

#### Section 2

| Second round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| | Mattmann | 6 | 6 | 9 | | | | | | | | | | | | | | |
| | McDiarmid | 3 | 1 | 7 | | | | | | | | | | | | | | |
| | | | | | | | | Mattmann | 6 | 6 | 7 | 3 | 6 | | | | | |
| | | | | | | | | Crowther | 3 | 4 | 9 | 6 | 3 | | | | | |
| | Paul | 6 | 6 | 1 | 2 | 6 | | | | | | | | | | | | |
| | Crowther | 3 | 4 | 6 | 6 | 8 | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | Mattmann | 4 | 2 | 4 |
| | | | | | | | | | | | | | | 3 | Kovacs | 6 | 6 | 6 |
| | Vogt | 1 | 6 | 4 | 1 | | | | | | | | | | | | | |
| | Seixas | 6 | 1 | 6 | 6 | | | | | | | | | | | | | |
| | | | | | | | | Seixas | 7 | 9 | 4 | 4 | 1 | | | | | |
| | | | | | | | 3 | Kovacs | 5 | 7 | 6 | 6 | 6 | | | | | |
| | Anderson | 1 | 6 | 1 | 8 | | | | | | | | | | | | | |
| 3 | Kovacs | 6 | 3 | 6 | 10 | | | | | | | | | | | | | |

#### Section 3

| Second round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| | Schroeder | 6 | 6 | 7 | | | | | | | | | | | | | | |
| | Wall | 3 | 0 | 5 | | | | | | | | | | | | | | |
| | | | | | | | | Schroeder | 2 | 6 | 6 | 6 | | | | | | |
| | | | | | | | | Anderson | 6 | 3 | 4 | 4 | | | | | | |
| | Anderson | 6 | 6 | 3 | 5 | 6 | | | | | | | | | | | | |
| | Underwood | 2 | 3 | 6 | 7 | 0 | | | | | | | | | | | | |
| | | | | | | | | | | | | | | Schroeder | 6 | 6 | 5 | 8 |
| | | | | | | | | | | | | | 7 | Grant | 4 | 3 | 7 | 6 |
| | Harman | 1 | 6 | 5 | 3 | | | | | | | | | | | | | |
| | Hartman | 6 | 1 | 7 | 6 | | | | | | | | | | | | | |
| | | | | | | | | Hartman | 1 | 6 | 1 | 3 | | | | | | |
| | | | | | | | 7 | Grant | 6 | 4 | 6 | 6 | | | | | | |
| | Anderson | 3 | 3 | 9 | | | | | | | | | | | | | | |
| 7 | Grant | 6 | 6 | 11 | | | | | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| | | | | | | | | Prochaska | 1 | 1 | 3 | | | | | | | | | | | | |
| | Podesta | 6 | 6 | 9 | 4 | | | Davenport | 6 | 6 | 6 | | | | | | | | | | | | |
| | Davenport | 3 | 8 | 11 | 6 | | | | | | | | | Davenport | 5 | 5 | 6 | 6 | | | | | |
| | Shields | 8 | 8 | 7 | 0 | | | | | | | | | Surface | 7 | 7 | 3 | 8 | | | | | |
| | Guernsey | 6 | 10 | 9 | 6 | | | Guernsey | 6 | 3 | 3 | 9 | | | | | | | | | | | |
| 9 | Mulloy | 5 | 1 | 3 | | | | Surface | 3 | 6 | 6 | 11 | | | | | | | | | | | |
| | Surface | 7 | 6 | 6 | | | | | | | | | | | | | | | | Surface | 0 | 3 | 1 |
| | Hawley | 6 | 3 | 1 | 0 | | | | | | | | | | | | | | 1 | Riggs | 6 | 6 | 6 |
| | Steele Jr. | 3 | 6 | 6 | 6 | | | Steele Jr. | 4 | 4 | 3 | | | | | | | | | | | | |
| | Smith | 2 | 1 | 2 | | | | Talbert | 6 | 6 | 6 | | | | | | | | | | | | |
| | Talbert | 6 | 6 | 6 | | | | | | | | | | Talbert | 3 | 4 | 3 | | | | | | |
| | Mahoney | 6 | 9 | 1 | 1 | 0 | | | | | | | 1 | Riggs | 6 | 6 | 6 | | | | | | |
| | Sutter | 1 | 7 | 6 | 6 | 6 | | Sutter | 2 | 2 | 6 | | | | | | | | | | | | |
| | Lubin | w/o | | | | | 1 | Riggs | 6 | 6 | 8 | | | | | | | | | | | | |
| 1 | Riggs | | | | | | | | | | | | | | | | | | | | | | |

#### Section 5

| First round | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| Decker | 1 | 1 | 2 | | | | | | | | | | | | | | | | | | | | | | |
| Wood | 6 | 6 | 6 | | | | Wood | 6 | 1 | 8 | 6 | | | | | | | | | | | | | | |
| Price | 7 | 1 | 0 | 1 | | | Low | 2 | 6 | 6 | 3 | | | | | | | | | | | | | | |
| Low | 5 | 6 | 6 | 6 | | | | | | | | | | Wood | 3 | 3 | 3 | | | | | | | | |
| Hunt | 6 | 6 | 4 | 6 | | | | | | | | | | Kramer | 6 | 6 | 6 | | | | | | | | |
| Kramer | 1 | 8 | 6 | 8 | | | Kramer | 6 | 6 | 6 | | | | | | | | | | | | | | | |
| McGehee | 1 | 8 | 1 | 3 | | | Alloo | 0 | 2 | 4 | | | | | | | | | | | | | | | |
| Alloo | 6 | 6 | 6 | 6 | | | | | | | | | | | | | | | | | Kramer | 6 | 8 | 5 | 6 |
| Yamagishi | 1 | 3 | 1 | | | | | | | | | | | | | | | | | 6 | Prusoff | 3 | 6 | 7 | 3 |
| Amark | 6 | 6 | 6 | | | | Amark | 4 | 6 | 3 | 6 | 6 | | | | | | | | | | | | | |
| Johnson | 2 | 6 | 1 | 3 | | | Doeg | 6 | 1 | 6 | 3 | 3 | | | | | | | | | | | | | |
| Doeg | 6 | 2 | 6 | 6 | | | | | | | | | | Amark | 6 | 6 | 1 | 0 | 1 | | | | | | |
| Froehling | 6 | 6 | 2 | 3 | 3 | | | | | | | | 6 | Prusoff | 3 | 4 | 6 | 6 | 6 | | | | | | |
| Hall | 1 | 1 | 6 | 6 | 6 | | Hall | 6 | 3 | 6 | 7 | 4 | | | | | | | | | | | | | |
| | | | | | | 6 | Prusoff | 1 | 6 | 0 | 9 | 6 | | | | | | | | | | | | | |

#### Section 6

| Second round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| | Hecht | 2 | 6 | 1 | 6 | 8 | | | | | | | | | | | | |
| | Gillespie | 6 | 3 | 6 | 3 | 10 | | | | | | | | | | | | |
| | | | | | | | | Gillespie | 4 | 6 | 3 | 6 | 6 | | | | | |
| | | | | | | | | Bobbitt | 6 | 1 | 6 | 3 | 3 | | | | | |
| | Bickel | 3 | 4 | 2 | | | | | | | | | | | | | | |
| | Bobbitt | 6 | 6 | 6 | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | Gillespie | 2 | 3 | 8 |
| | | | | | | | | | | | | | | 4 | Parker | 6 | 6 | 10 |
| | Kelly | | | | | | | | | | | | | | | | | |
| | Arenberg | w/o | | | | | | | | | | | | | | | | |
| | | | | | | | | Kelly | 3 | 1 | 3 | | | | | | | |
| | | | | | | | 4 | Parker | 6 | 6 | 6 | | | | | | | |
| | Segura | 3 | 1 | 5 | | | | | | | | | | | | | | |
| 4 | Parker | 6 | 6 | 7 | | | | | | | | | | | | | | |

#### Section 7

| Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| | Bartlett | 1 | 6 | 6 | 6 | | | | | | | | | | |
| | Evert | 6 | 4 | 3 | 3 | | | | | | | | | | |
| | | | | | | | Bartlett | 5 | 3 | 6 | | | | | |
| | | | | | | | Olewine | 7 | 6 | 8 | | | | | |
| | Greenberg | 3 | 7 | 6 | 0 | | | | | | | | | | |
| | Olewine | 6 | 9 | 0 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | Olewine | 3 | 1 | 4 |
| | | | | | | | | | | | 8 | Cooke | 6 | 6 | 6 |
| | Kantrowitz | 1 | 6 | 6 | 6 | | | | | | | | | | |
| | Martin | 6 | 1 | 1 | 3 | | | | | | | | | | |
| | | | | | | | Kantrowitz | 3 | 1 | 3 | | | | | |
| | | | | | | 8 | Cooke | 6 | 6 | 6 | | | | | |
| | Choy | 1 | 3 | 3 | | | | | | | | | | | |
| 8 | Cooke | 6 | 6 | 6 | | | | | | | | | | | |

#### Section 8

| Second round | Second round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| | O'Neill | | | | | | | | | | | | | | | |
| | Pryor | w/o | | | | | | | | | | | | | | |
| | | | | | | | | O'Neill | 1 | 3 | 3 | | | | | |
| | | | | | | | | Everett | 6 | 6 | 6 | | | | | |
| | Everett | 3 | 5 | 6 | 6 | 15 | | | | | | | | | | |
| 10 | Van Horn | 6 | 7 | 1 | 0 | 13 | | | | | | | | | | |
| | | | | | | | | | | | | | Everett | 3 | 3 | 1 |
| | | | | | | | | | | | | 2 | McNeill | 6 | 6 | 6 |
| | Thackara | 6 | 2 | 5 | 6 | | | | | | | | | | | |
| | Toley | 1 | 6 | 7 | 8 | | | | | | | | | | | |
| | | | | | | | | Toley | 3 | 3 | 1 | | | | | |
| | | | | | | | 2 | McNeill | 6 | 6 | 6 | | | | | |
| | Fishbach | 1 | 1 | 1 | | | | | | | | | | | | |
| 2 | McNeill | 6 | 6 | 6 | | | | | | | | | | | | |