# 1884 U.S. National Championships – Singles

Three-time defending champion Richard Sears defeated Howard Taylor in the challenge round, 6–0, 1–6, 6–0, 6–2 to win the men's singles tennis title at the 1884 U.S. National Championships. A challenge round was introduced this year, which was played until 1911. Arthur Rives became the first player to play at more than one Grand Slam singles tournament within a calendar year.

## Draw
### Challenge round

| Challenge round | Challenge round | Challenge round | Challenge round | Challenge round | Challenge round | Challenge round |
| Richard Sears | Richard Sears | 6 | 1 | 6 | 6 | |
| Howard Taylor | Howard Taylor | 0 | 6 | 0 | 2 | |

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Finals | Finals | Finals | Finals | Finals |
| Percy Knapp | 2 | 6 | 1 | | | | | |
| Howard Taylor | 6 | 2 | 6 | | | | | |
| Howard Taylor | 6 | 2 | 6 | Howard Taylor | 6 | 4 | 6 | 6 |
| | | | | William VS Thorne | 4 | 6 | 1 | 4 |
| William VS Thorne | 2 | 6 | 6 | William VS Thorne | 4 | 6 | 1 | 4 |
| Clarence Clark | 6 | 2 | 3 | | | | | |

### Earlier rounds
#### Section 1

| 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 |
| RL Beeckman | RL Beeckman | 6 | 6 | | | | | | | | | | | | | |
| MG Post | MG Post | 3 | 2 | RL Beeckman | RL Beeckman | 6 | 6 | | | | | | | | | |
| | | | | SH Hooper | SH Hooper | 5 | 4 | | | | | | | | | |
| | | | | | | | | RL Beeckman | RL Beeckman | 1 | 6 | 6 | | | | |
| | | | | | | | | P Willis | P Willis | 6 | 5 | 2 | | | | |
| | | | | P Willis | P Willis | 6 | 6 | | | | | | | | | |
| | | | | A Rives | A Rives | 3 | 3 | | | | | | | | | |
| | | | | | | | | | | | | | RL Beeckman | RL Beeckman | 1 | 2 |
| | | | | | | | | | | | | | P Knapp | P Knapp | 6 | 6 |
| | | | | P Knapp | P Knapp | 6 | 6 | | | | | | | | | |
| | | | | FH Gillette | FH Gillette | 4 | 2 | | | | | | | | | |
| | | | | | | | | P Knapp | P Knapp | 6 | 6 | | | | | |
| | | | | | | | | WB Eaton | WB Eaton | 1 | 1 | | | | | |
| | | | | WB Eaton | WB Eaton | w/ | o | | | | | | | | | |
| | | | | J Dwight | J Dwight | | | | | | | | | | | |

#### Section 2

| 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 |
| | | | | H Taylor | H Taylor | 6 | 6 | | | | | | | | | |
| GM Brinley | GM Brinley | 6 | 6 | GM Brinley | GM Brinley | 1 | 1 | | | | | | | | | |
| WB Merriman | WB Merriman | 5 | 1 | | | | | H Taylor | H Taylor | 3 | 6 | 7 | | | | |
| | | | | | | | | J Clark | J Clark | 6 | 2 | 5 | | | | |
| | | | | J Clark | J Clark | 6 | 6 | | | | | | | | | |
| | | | | WF Metcalfe | WF Metcalfe | 2 | 0 | | | | | | | | | |
| | | | | | | | | | | | | | H Taylor | H Taylor | 6 | 6 |
| | | | | | | | | | | | | | A Van Rensselaer | A Van Rensselaer | 4 | 1 |
| | | | | A Van Rensselaer | A Van Rensselaer | 6 | 6 | | | | | | | | | |
| | | | | WH Barnes | WH Barnes | 5 | 1 | | | | | | | | | |
| | | | | | | | | A Van Rensselaer | A Van Rensselaer | 6 | 2 | 6 | | | | |
| | | | | | | | | RF Conover | RF Conover | 4 | 6 | 3 | | | | |
| | | | | RF Conover | RF Conover | 6 | 6 | | | | | | | | | |
| | | | | F Keene | F Keene | 2 | 2 | | | | | | | | | |

#### 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 |
| W Thorne | W Thorne | 6 | 6 | | | | | | | | | | | | | | |
| F Warren | F Warren | 0 | 1 | W Thorne | W Thorne | 0 | 6 | 6 | | | | | | | | | |
| | | | | MS Paton | MS Paton | 6 | 5 | 4 | | | | | | | | | |
| | | | | | | | | | W Thorne | W Thorne | w/ | o | | | | | |
| | | | | | | | | | H Slocum | H Slocum | | | | | | | |
| | | | | H Slocum | H Slocum | 4 | 6 | 6 | | | | | | | | | |
| | | | | FJ Hynes | FJ Hynes | 6 | 2 | 3 | | | | | | | | | |
| | | | | | | | | | | | | | | W Thorne | W Thorne | w/ | o |
| | | | | | | | | | | | | | | G Richards | G Richards | | |
| | | | | G Richards | G Richards | w/ | o | | | | | | | | | | |
| | | | | AM Wood | AM Wood | | | | | | | | | | | | |
| | | | | | | | | | G Richards | G Richards | 4 | 6 | 6 | | | | |
| | | | | | | | | | EK Butler | EK Butler | 6 | 5 | 4 | | | | |
| | | | | EK Butler | EK Butler | 6 | 6 | | | | | | | | | | |
| | | | | W Berry | W Berry | 2 | 1 | | | | | | | | | | |

#### Section 4

| Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| C Clark | C Clark | 6 | 6 | | | | | | | | |
| A Curtis | A Curtis | 3 | 4 | | | | | | | | |
| | | | | C Clark | C Clark | 6 | 6 | | | | |
| | | | | PR Lyman | PR Lyman | 4 | 1 | | | | |
| PR Lyman | PR Lyman | 6 | 6 | | | | | | | | |
| N Perry E Hallowell | N Perry E Hallowell | 3 | 3 | | | | | | | | |
| | | | | | | | | C Clark | C Clark | 6 | 6 |
| | | | | | | | | AC Salt | AC Salt | 2 | 2 |
| AC Salt | AC Salt | 6 | 6 | | | | | | | | |
| EE Denniston | EE Denniston | 5 | 1 | | | | | | | | |
| | | | | AC Salt | AC Salt | 6 | 6 | | | | |
| | | | | M Fielding | M Fielding | 4 | 1 | | | | |
| M Fielding | M Fielding | 6 | 6 | | | | | | | | |
| W Gammell | W Gammell | 1 | 4 | | | | | | | | |