# 1966 U.S. National Championships – Men's singles

Unseeded Fred Stolle defeated John Newcombe 4–6, 12–10, 6–3, 6–4 in the final to win the men's singles tennis title at the 1966 U.S. National Championships.

## Seeds

The seeded players are listed below. Fred Stolle is the champion; others show the round in which they were eliminated.
* Manuel Santana (semifinals)
* Roy Emerson (semifinals)
* Dennis Ralston (fourth round)
* Tony Roche (third round)
* Arthur Ashe (third round)
* Cliff Drysdale (third round)
* Clark Graebner (quarterfinals)
* Cliff Richey (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 | Final | Final | Final | Final | Final |
| 1 | Manuel Santana | 6 | 6 | 8 | 5 | 6 | | | | | | | | | | | |
| | Bill Bowrey | 8 | 2 | 6 | 7 | 4 | | | | | | | | | | | |
| | Bill Bowrey | 8 | 2 | 6 | 7 | 4 | 1 | Manuel Santana | 3 | 4 | 8 | 6 | | | | | |
| | | | | | | | | John Newcombe | 6 | 6 | 6 | 8 | | | | | |
| | Mark Cox | 6 | 1 | 6 | 2 | 1 | | John Newcombe | 6 | 6 | 6 | 8 | | | | | |
| | John Newcombe | 3 | 6 | 3 | 6 | 6 | | | | | | | | | | | |
| | John Newcombe | 3 | 6 | 3 | 6 | 6 | | | | | | | John Newcombe | 6 | 10 | 3 | 4 |
| | | | | | | | | | | | | | Fred Stolle | 4 | 12 | 6 | 6 |
| 7 | Clark Graebner | 3 | 4 | 2 | | | | | | | | | | | | | | Fred Stolle | 4 | 12 | 6 | 6 |
| | Fred Stolle | 6 | 6 | 6 | | | | | | | | | | | | | |
| | Fred Stolle | 6 | 6 | 6 | | | | Fred Stolle | 6 | 6 | 6 | | | | | | |
| | | | | | | | 2 | Roy Emerson | 4 | 1 | 1 | | | | | | |
| | Owen Davidson | 12 | 4 | 3 | 2 | | 2 | Roy Emerson | 4 | 1 | 1 | | | | | | |
| 2 | Roy Emerson | 10 | 6 | 6 | 6 | | | | | | | | | | | | |

### Earlier rounds
#### Section 1

| 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 |
| 1 | Santana | 6 | 6 | 6 | | | | | | | | | | | | | | | | | | |
| | Berli | 1 | 1 | 2 | | 1 | Santana | 6 | 6 | 6 | | | | | | | | | | | | |
| | Tutvin | 3 | 6 | 6 | 6 | | Tutvin | 1 | 1 | 3 | | | | | | | | | | | | |
| | Mangan | 6 | 2 | 1 | 1 | | | | | | | 1 | Santana | 3 | 6 | 6 | 8 | | | | | |
| | Moore | 6 | 6 | 6 | | | | | | | | | Moore | 6 | 2 | 3 | 6 | | | | | |
| | Darrah | 2 | 4 | 1 | | | Moore | 6 | 6 | 6 | | | | | | | | | | | | |
| | Reese | 6 | 6 | 7 | | | Reese | 4 | 2 | 2 | | | | | | | | | | | | |
| | Rosello | 1 | 4 | 5 | | | | | | | | | | | | | | 1 | Santana | 9 | 9 | 8 |
| | Tym | 1 | 6 | 6 | 6 | | | | | | | | | | | | | | McKinley | 7 | 7 | 6 |
| | Sweeney | 6 | 1 | 4 | 2 | | Tym | 2 | 3 | 4 | | | | | | | | | | | | |
| | McKinley | 6 | 6 | 6 | | | McKinley | 6 | 6 | 6 | | | | | | | | | | | | |
| | Bovett | 4 | 1 | 1 | | | | | | | | | McKinley | 6 | 6 | 6 | | | | | | |
| | Marcin | 7 | 9 | 6 | | | | | | | | | Carrero | 2 | 4 | 0 | | | | | | |
| | Yang | 5 | 7 | 1 | | | Marcin | 2 | 4 | 6 | 4 | | | | | | | | | | | |
| | Carrero | 6 | 7 | 6 | | | Carrero | 6 | 6 | 3 | 6 | | | | | | | | | | | |
| | Sack | 3 | 5 | 4 | | | | | | | | | | | | | | | | | | |

#### Section 2

| 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 | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round |
| 6 | Drysdale | 6 | 6 | 6 | | | | | | | | | | | | | | | | | | | |
| | Gorman | 3 | 3 | 1 | | | 6 | Drysdale | 6 | 6 | 6 | | | | | | | | | | | | |
| | Cantin | 9 | 1 | 3 | 6 | 7 | | Cantin | 3 | 2 | 3 | | | | | | | | | | | | |
| | Kovaleski | 7 | 6 | 6 | 1 | 5 | | | | | | | | 6 | Drysdale | 1 | 6 | 6 | | | | | |
| | Bowrey | 6 | 6 | 6 | | | | | | | | | | | Bowrey | 6 | 8 | 8 | | | | | |
| | Mudd | 1 | 0 | 0 | | | | Bowrey | 6 | 6 | 6 | | | | | | | | | | | | |
| | Scott | 6 | 6 | 6 | | | | Scott | 4 | 3 | 4 | | | | | | | | | | | | |
| | Sullivan | 3 | 3 | 4 | | | | | | | | | | | | | | | | Bowrey | 6 | 6 | 6 |
| | Subirats | 6 | 6 | 2 | 3 | 6 | | | | | | | | | | | | | | Osborne | 3 | 2 | 4 |
| | Seewagen | 3 | 4 | 6 | 6 | 3 | | Subirats | 6 | 3 | 9 | 6 | 6 | | | | | | | | | | |
| | De Gronckel | 2 | 6 | 6 | 6 | | | De Gronckel | 4 | 6 | 11 | 3 | 0 | | | | | | | | | | |
| | Lambert | 6 | 4 | 4 | 2 | | | | | | | | | | Subirats | 7 | 8 | 2 | 1 | | | | |
| | Osborne | 6 | 6 | 6 | 21 | | | | | | | | | | Osborne | 9 | 6 | 6 | 6 | | | | |
| | Buchholz | 8 | 3 | 3 | 19 | | | Osborne | 6 | 6 | 7 | | | | | | | | | | | | |
| | Beust | 6 | 6 | 6 | | | | Beust | 3 | 4 | 5 | | | | | | | | | | | | |
| | Watson | 2 | 3 | 4 | | | | | | | | | | | | | | | | | | | |

#### Section 3

| 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 | Second round | Third round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round |
| 4 | Roche | 6 | 6 | 6 | | | | | | | | | | | | | | | | | | | |
| | Lara | 4 | 3 | 4 | | | 4 | Roche | 6 | 8 | 6 | 8 | | | | | | | | | | | |
| | Stewart | 14 | 7 | 2 | 3 | 6 | | Stewart | 4 | 10 | 3 | 6 | | | | | | | | | | | |
| | Villarete | 12 | 5 | 6 | 6 | 3 | | | | | | | | 4 | Roche | 8 | 4 | 5 | | | | | |
| | Seixas | 6 | 6 | 2 | 2 | 6 | | | | | | | | | Cox | 10 | 6 | 7 | | | | | |
| | Smith | 3 | 4 | 6 | 6 | 4 | | Seixas | 3 | 6 | 3 | | | | | | | | | | | | |
| | Cox | 6 | 6 | 6 | | | | Cox | 6 | 8 | 6 | | | | | | | | | | | | |
| | Stockton | 4 | 2 | 2 | | | | | | | | | | | | | | | | Cox | 10 | 6 | 7 |
| | Obando | 7 | 6 | 3 | 7 | | | | | | | | | | | | | | | Crookenden | 8 | 4 | 5 |
| | Estep | 5 | 4 | 6 | 5 | | | Obando | 0 | 4 | 1 | | | | | | | | | | | | |
| | Jackson | 9 | 6 | 3 | 6 | | | Jackson | 6 | 6 | 6 | | | | | | | | | | | | |
| | Steele III | 7 | 1 | 6 | 0 | | | | | | | | | | Jackson | 4 | 6 | 2 | 2 | | | | |
| | Crookenden | 6 | 6 | 8 | 5 | 6 | | | | | | | | | Crookenden | 6 | 4 | 6 | 6 | | | | |
| | Avoyer | 2 | 2 | 10 | 7 | 4 | | Crookenden | 1 | 6 | 5 | 6 | 6 | | | | | | | | | | |
| | McManus | 7 | 6 | 6 | | | | McManus | 6 | 3 | 7 | 4 | 4 | | | | | | | | | | |
| | Pasarell | 5 | 4 | 2 | | | | | | | | | | | | | | | | | | | |

#### 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 | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| 5 | Ashe | 15 | 6 | 6 | | | | | | | | | | | | | | | | | | | |
| | Roemer | 3 | 2 | 0 | | | 5 | Ashe | 8 | 4 | 6 | 6 | | | | | | | | | | | |
| | Holmberg | 6 | 6 | 6 | | | | Holmberg | 6 | 6 | 3 | 4 | | | | | | | | | | | |
| | Cromwell | 4 | 2 | 4 | | | | | | | | | 5 | Ashe | 2 | 3 | 4 | | | | | | |
| | Newcombe | 8 | 3 | 6 | 6 | | | | | | | | | Newcombe | 6 | 6 | 6 | | | | | | |
| | Pickens | 6 | 6 | 0 | 4 | | | Newcombe | 6 | 16 | 6 | | | | | | | | | | | | |
| | Ryan | 6 | 6 | 6 | | | | Ryan | 3 | 14 | 4 | | | | | | | | | | | | |
| | Pressly | 1 | 1 | 2 | | | | | | | | | | | | | | Newcombe | 9 | 5 | 6 | 6 | 6 |
| | Bungert | 6 | 6 | 6 | | | | | | | | | | | | | | Bungert | 11 | 7 | 2 | 2 | 2 |
| | Sprengelmeyer | 1 | 2 | 4 | | | | Bungert | 9 | 6 | 8 | | | | | | | | | | | | |
| | Fillol | 6 | 6 | 4 | 6 | | | Fillol | 7 | 3 | 6 | | | | | | | | | | | | |
| | Fishbach | 2 | 4 | 6 | 3 | | | | | | | | | Bungert | 6 | 6 | 6 | | | | | | |
| | McKinley | 3 | 6 | 2 | 6 | 6 | | | | | | | | Tacchini | 0 | 0 | 1 | | | | | | |
| | Montgomery | 6 | 4 | 6 | 2 | 4 | | McKinley | 2 | r | | | | | | | | | | | | | |
| | Tacchini | 10 | 6 | 6 | 6 | | | Tacchini | 1 | | | | | | | | | | | | | | |
| | Lumsden | 12 | 2 | 3 | 2 | | | | | | | | | | | | | | | | | | |

#### Section 5

| 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 | Fourth round |
| | Dell | 6 | 6 | 6 | 6 | | | | | | | | | | | | | | | | | | | |
| | Kesl | 8 | 1 | 0 | 1 | | | Dell | 6 | 6 | 3 | 6 | | | | | | | | | | | | |
| | Guerry | 6 | 6 | 3 | 7 | | | Guerry | 4 | 4 | 6 | 0 | | | | | | | | | | | | |
| | Olmedo | 4 | 4 | 6 | 5 | | | | | | | | | Dell | 7 | 3 | 8 | 4 | | | | | | |
| | Loyo-Mayo | 4 | 6 | 6 | 6 | | | | | | | | | Stilwell | 5 | 6 | 10 | 6 | | | | | | |
| | Stone | 6 | 4 | 2 | 3 | | | Loyo-Mayo | 3 | 2 | 6 | | | | | | | | | | | | | |
| | Stilwell | 6 | 6 | 6 | | | | Stilwell | 6 | 6 | 8 | | | | | | | | | | | | | |
| | Glass | 0 | 4 | 3 | | | | | | | | | | | | | | | | Stilwell | 11 | 6 | 3 | 5 |
| | Power | 16 | 6 | 6 | | | | | | | | | | | | | | | 7 | Graebner | 9 | 8 | 6 | 7 |
| | Cheney | 14 | 3 | 4 | | | | Power | 6 | 6 | 6 | | | | | | | | | | | | | |
| | Schloss | 6 | 6 | 6 | | | | Schloss | 0 | 4 | 1 | | | | | | | | | | | | | |
| | Spannagel | 4 | 2 | 2 | | | | | | | | | | Power | 4 | 2 | 6 | 1 | | | | | | |
| | Leach | 6 | 3 | 2 | 11 | 8 | | | | | | | 7 | Graebner | 6 | 6 | 3 | 6 | | | | | | |
| | Dell | 3 | 6 | 6 | 9 | 6 | | Leach | 2 | 2 | 3 | | | | | | | | | | | | | |
| 7 | Graebner | 6 | 7 | 6 | | | 7 | Graebner | 6 | 6 | 6 | | | | | | | | | | | | | |
| | Guzmán | 2 | 5 | 2 | | | | | | | | | | | | | | | | | | | | |

#### Section 6

| First round | First round | 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 | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| | Stolle | 6 | 6 | 6 | | | | | | | | | | | | | | | | | |
| | Gorski | 2 | 4 | 4 | | | | Stolle | 6 | 6 | 6 | | | | | | | | | | |
| | Barth | 6 | 6 | 6 | | | | Barth | 4 | 1 | 4 | | | | | | | | | | |
| | Kourides | 3 | 1 | 0 | | | | | | | | | Stolle | 10 | 6 | 8 | | | | | |
| | Carpenter | 6 | 2 | 6 | 6 | 6 | | | | | | | Contet | 8 | 2 | 6 | | | | | |
| | Brown | 8 | 6 | 0 | 4 | 2 | | Carpenter | 4 | 6 | 2 | | | | | | | | | | |
| | Contet | 6 | 6 | 6 | | | | Contet | 6 | 8 | 6 | | | | | | | | | | |
| | Howe | 4 | 2 | 3 | | | | | | | | | | | | | | Stolle | 7 | 6 | 9 |
| | Beck | 6 | 6 | 6 | | | | | | | | | | | | | 3 | Ralston | 5 | 3 | 7 |
| | Carrington | 2 | 1 | 1 | | | | Beck | 5 | 2 | 5 | | | | | | | | | | |
| | Osuna | 4 | 6 | 4 | 6 | 6 | | Osuna | 7 | 6 | 7 | | | | | | | | | | |
| | Barnes | 6 | 4 | 6 | 4 | 4 | | | | | | | Osuna | 1 | 4 | 3 | | | | | |
| | Mulligan | 4 | 6 | 6 | 6 | | | | | | | 3 | Ralston | 6 | 6 | 6 | | | | | |
| | Karp | 6 | 2 | 3 | 2 | | | Mulligan | 1 | 4 | 3 | | | | | | | | | | |
| 3 | Ralston | 6 | 6 | 7 | | | 3 | Ralston | 6 | 6 | 6 | | | | | | | | | | |
| | Singh | 1 | 3 | 5 | | | | | | | | | | | | | | | | | |

#### Section 7

| First round | First round | 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 | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| | Neely | 10 | 4 | 6 | 4 | 8 | | | | | | | | | | | | | | | |
| | Zuleta | 8 | 6 | 4 | 6 | 6 | | Neely | 1 | 6 | 3 | | | | | | | | | | |
| | Ruffels | 6 | 6 | 6 | | | | Ruffels | 6 | 8 | 6 | | | | | | | | | | |
| | Scwitters | 1 | 0 | 0 | | | | | | | | Ruffels | 3 | 10 | 6 | 6 | | | | | |
| | Froehling | 6 | 6 | 6 | | | | | | | | Froehling | 6 | 8 | 4 | 3 | | | | | |
| | Tully | 3 | 3 | 1 | | | | Froehling | 6 | 6 | 6 | | | | | | | | | | |
| | Van Lingen | 4 | 7 | 6 | 5 | 6 | | Van Lingen | 1 | 1 | 2 | | | | | | | | | | |
| | Howe | 6 | 5 | 3 | 7 | 3 | | | | | | | | | | | Ruffels | 6 | 2 | 1 | 1 |
| | Powless | 6 | 6 | 6 | | | | | | | | | | | | | Davidson | 3 | 6 | 6 | 6 |
| | Conner | 4 | 3 | 4 | | | | Powless | 1 | 3 | 4 | | | | | | | | | | |
| | García | 6 | 2 | 6 | 3 | 12 | | García | 6 | 6 | 6 | | | | | | | | | | |
| | Russell | 3 | 6 | 4 | 6 | 10 | | | | | | García | 1 | 4 | 0 | | | | | | |
| | Davidson | 6 | 6 | 6 | | | | | | | | Davidson | 6 | 6 | 6 | | | | | | |
| | Howard | 0 | 4 | 3 | | | | Davidson | 7 | 8 | 6 | | | | | | | | | | |
| 8 | Richey | 6 | 6 | 6 | | | 8 | Richey | 5 | 6 | 1 | | | | | | | | | | |
| | Jennings | 3 | 2 | 3 | | | | | | | | | | | | | | | | | |

#### Section 8

| 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 | Second round | Third round | Third round | Third round | Third round | Third round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round | Fourth round |
| | Buding | 6 | 6 | 6 | | | | | | | | | | | | | | | | | | | | |
| | Tidball | 1 | 4 | 3 | | | | Buding | 6 | 6 | 8 | 2 | 4 | | | | | | | | | | | |
| | Keldie | 2 | 2 | 6 | 10 | 6 | | Keldie | 8 | 1 | 6 | 6 | 6 | | | | | | | | | | | |
| | Siska | 6 | 6 | 0 | 8 | 1 | | | | | | | | | Keldie | 3 | 1 | 4 | | | | | | |
| | Oehrlein | 8 | 6 | 6 | | | | | | | | | | | Riessen | 6 | 6 | 6 | | | | | | |
| | Rombeau | 6 | 4 | 2 | | | | Oehrlein | 1 | 2 | 4 | | | | | | | | | | | | | |
| | Riessen | 6 | 7 | 7 | | | | Riessen | 6 | 6 | 6 | | | | | | | | | | | | | |
| | Lutz | 4 | 5 | 5 | | | | | | | | | | | | | | | | Riessen | 6 | 3 | 5 | 3 |
| | Leonard | | | | | | | | | | | | | | | | | | 2 | Emerson | 2 | 6 | 7 | 6 |
| | Olvera | w/o | | | | | | Leonard | 4 | 3 | 2 | | | | | | | | | | | | | |
| | Gerrard | 1 | 6 | 3 | 6 | 6 | | Gerrard | 6 | 6 | 6 | | | | | | | | | | | | | |
| | Hoehn | 6 | 3 | 6 | 3 | 2 | | | | | | | | | Gerrard | 0 | 4 | 1 | | | | | | |
| | Harrison | 6 | 1 | 8 | 11 | 13 | | | | | | | | 2 | Emerson | 6 | 6 | 6 | | | | | | |
| | Darley | 3 | 6 | 10 | 9 | 11 | | Harrison | 6 | 1 | 6 | 2 | | | | | | | | | | | | |
| 2 | Emerson | 6 | 9 | 9 | | | 2 | Emerson | 4 | 6 | 8 | 6 | | | | | | | | | | | | |
| | El Shafei | 3 | 7 | 7 | | | | | | | | | | | | | | | | | | | | |