# 1921 World Hard Court Championships – Men's singles

The men's singles was one of five events of the 1921 World Hard Court Championships tennis tournament held in Paris, France from 28 May until 5 June 1921. The draw consisted of 47 players. William Laurentz was the defending champion, but lost in the quarterfinals. Bill Tilden became the first American to win the Championship after beating Jean Washer of Belgium in the final.

## 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| Jean Washer | Jean Washer | 6 | 6 | 7 | | | | | | | | | | | | |
| Jean Borotra | Jean Borotra | 2 | 1 | 5 | | | | | | | | | | | | |
| Jean Borotra | Jean Borotra | 2 | 1 | 5 | | Jean Washer | Jean Washer | 7 | 4 | 6 | 6 | | | | | |
| | | | | | | Erik Tegner | Erik Tegner | 5 | 6 | 1 | 4 | | | | | |
| William Laurentz | William Laurentz | 4 | 4 | 3 | | Erik Tegner | Erik Tegner | 5 | 6 | 1 | 4 | | | | | |
| Erik Tegner | Erik Tegner | 6 | 6 | 6 | | | | | | | | | | | | |
| Erik Tegner | Erik Tegner | 6 | 6 | 6 | | | | | | | | Jean Washer | Jean Washer | 3 | 3 | 3 |
| | | | | | | | | | | | | Bill Tilden | Bill Tilden | 6 | 6 | 6 |
| Bill Tilden | Bill Tilden | 6 | 6 | 5 | 6 | | | | | | | | | | | | Bill Tilden | Bill Tilden | 6 | 6 | 6 |
| Roger Danet | Roger Danet | 2 | 2 | 7 | 0 | | | | | | | | | | | |
| Roger Danet | Roger Danet | 2 | 2 | 7 | 0 | Bill Tilden | Bill Tilden | 6 | 6 | 6 | | | | | | |
| | | | | | | Nicolae Mişu | Nicolae Mişu | 3 | 3 | 2 | | | | | | |
| A. Felix Poulin | A. Felix Poulin | 3 | 1 | 6 | 1 | Nicolae Mişu | Nicolae Mişu | 3 | 3 | 2 | | | | | | |
| Nicolae Mişu | Nicolae Mişu | 6 | 6 | 1 | 6 | | | | | | | | | | | |

### Top half
#### 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| Jean Washer | Jean Washer | w/o | | | | | | | | | | | | | | |
| Jacques Brugnon | Jacques Brugnon | | | | | | | | | | | | | | | |
| | | | | | | | Jean Washer | Jean Washer | 6 | 6 | 6 | | | | | |
| | | | | | | | Jean le Besnerais | Jean le Besnerais | 2 | 4 | 0 | | | | | |
| Jean le Besnerais | Jean le Besnerais | 2 | 6 | 3 | 6 | 5 | | | | | | | | | | |
| Chatan | Chatan | 6 | 4 | 6 | 4 | 2$^r$ | | | | | | | | | | |
| | | | | | | | | | | | | Jean Washer | Jean Washer | 6 | 6 | 7 |
| | | | | | | | | | | | | Jean Borotra | Jean Borotra | 2 | 1 | 5 |
| Jean Borotra | Jean Borotra | 6 | 1 | 6 | 4 | 6 | | | | | | | | | | |
| Manuel de Gomar | Manuel de Gomar | 1 | 6 | 4 | 6 | 4 | | | | | | | | | | |
| | | | | | | | Jean Borotra | Jean Borotra | 6 | 8 | 6 | | | | | |
| | | | | | | | J.T. Baines | J.T. Baines | 1 | 6 | 3 | | | | | |
| J.T. Baines | J.T. Baines | 6 | 6 | 3 | 6 | | | | | | | | | | | |
| Pierre Dufau | Pierre Dufau | 4 | 4 | 6 | 2 | | | | | | | | | | | |

#### Section 2

| 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| William Laurentz | William Laurentz | 6 | 3 | 6 | 6 | | | | | | | | | | | | | | | | | | | |
| Jean Francois Blanchy | Jean Francois Blanchy | 0 | 6 | 3 | 2 | William Laurentz | William Laurentz | 6 | 6 | 2 | 5 | 6 | | | | | | | | | | | | |
| Manuel Areyzaga | Manuel Areyzaga | 6 | 6 | 5 | 6 | Manuel Areyzaga | Manuel Areyzaga | 4 | 4 | 6 | 7 | 4 | | | | | | | | | | | | |
| Jacques Samazeuilh | Jacques Samazeuilh | 0 | 4 | 7 | 1 | | | | | | | | William Laurentz | William Laurentz | 6 | 2 | 6 | 2 | 6 | | | | | |
| Alain Gerbault | Alain Gerbault | 3 | 6 | 6 | 6 | | | | | | | | Umberto de Morpurgo | Umberto de Morpurgo | 2 | 6 | 1 | 6 | 4 | | | | | |
| Léonce Aslangul | Léonce Aslangul | 6 | 3 | 0 | 2 | Alain Gerbault | Alain Gerbault | 4 | 3 | 6 | 1 | | | | | | | | | | | | | |
| Umberto de Morpurgo | Umberto de Morpurgo | w/o | | | | Umberto de Morpurgo | Umberto de Morpurgo | 6 | 6 | 2 | 6 | | | | | | | | | | | | | |
| Bonnetti | Bonnetti | | | | | | | | | | | | | | | | | | | William Laurentz | William Laurentz | 4 | 4 | 3 |
| Arnold Jones | Arnold Jones | 6 | 6 | 6 | | | | | | | | | | | | | | | | Erik Tegner | Erik Tegner | 6 | 6 | 6 |
| Marcel Cousin | Marcel Cousin | 0 | 2 | 3 | | Arnold Jones | Arnold Jones | 5 | 1 | 4 | | | | | | | | | | | | | | |
| Erik Tegner | Erik Tegner | 6 | 6 | 2 | 6 | Erik Tegner | Erik Tegner | 7 | 6 | 6 | | | | | | | | | | | | | | |
| Pablo Debran | Pablo Debran | 2 | 3 | 6 | 2 | | | | | | | | Erik Tegner | Erik Tegner | 6 | 2 | 0 | 6 | 6 | | | | | |
| Jean Faucamberge | Jean Faucamberge | w/o | | | | | | | | | | | Arthur Wallis Myers | Arthur Wallis Myers | 4 | 6 | 6 | 1 | 1 | | | | | |
| Luis de Olivares | Luis de Olivares | | | | | Jean Faucamberge | Jean Faucamberge | 5 | 1 | 1 | | | | | | | | | | | | | | |
| Arthur Wallis Myers | Arthur Wallis Myers | 6 | 6 | 6 | | Arthur Wallis Myers | Arthur Wallis Myers | 7 | 6 | 6 | | | | | | | | | | | | | | |
| J. d'Espine | J. d'Espine | 2 | 2 | 4 | | | | | | | | | | | | | | | | | | | | |

### Bottom half
#### Section 3

| 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| Sergei Rodzianko | Sergei Rodzianko | 10 | 7 | 6 | | | | | | | | | | | | | | | | | | | |
| de Lieneres | de Lieneres | 8 | 5 | 0 | | Sergei Rodzianko | Sergei Rodzianko | 6 | 0 | 6 | 5 | 6 | | | | | | | | | | | |
| Jed Jones | Jed Jones | 6 | 6 | 6 | | Jed Jones | Jed Jones | 3 | 6 | 2 | 7 | 3 | | | | | | | | | | | |
| Albert Lammens | Albert Lammens | 1 | 4 | 1 | | | | | | | | | Sergei Rodzianko | Sergei Rodzianko | 3 | 0 | 1 | | | | | | |
| Walter Crawley | Walter Crawley | 6 | 6 | 7 | | | | | | | | | Bill Tilden | Bill Tilden | 6 | 6 | 6 | | | | | | |
| Raymond Rodel | Raymond Rodel | 3 | 1 | 5 | | Walter Crawley | Walter Crawley | 6 | 3 | 4 | 5 | | | | | | | | | | | | |
| Bill Tilden | Bill Tilden | 6 | 2 | 6 | 10 | Bill Tilden | Bill Tilden | 4 | 6 | 6 | 7 | | | | | | | | | | | | |
| Eduardo Flaquer | Eduardo Flaquer | 0 | 6 | 3 | 8 | | | | | | | | | | | | | Bill Tilden | Bill Tilden | 6 | 6 | 5 | 6 |
| Engmann | Engmann | w/o | | | | | | | | | | | | | | | | Roger Danet | Roger Danet | 2 | 2 | 7 | 0 |
| Vallejo | Vallejo | | | | | Engmann | Engmann | 3 | 1 | 3 | | | | | | | | | | | | | |
| Pierre Albaran | Pierre Albaran | w/o | | | | Pierre Albaran | Pierre Albaran | 6 | 6 | 6 | | | | | | | | | | | | | |
| Frank Hunter | Frank Hunter | | | | | | | | | | | | Pierre Albaran | Pierre Albaran | | | | | | | | | |
| R.E. Sherbrooke | R.E. Sherbrooke | 6 | 6 | 10 | | | | | | | | | Roger Danet | Roger Danet | w/o | | | | | | | | |
| F. Rodon | F. Rodon | 2 | 2 | 8 | | R.E. Sherbrooke | R.E. Sherbrooke | 0 | 2 | 9 | | | | | | | | | | | | | |
| | | | | | | Roger Danet | Roger Danet | 6 | 6 | 11 | | | | | | | | | | | | | |

#### Section 4

| 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| Charles Aeschlimann | Charles Aeschlimann | 6 | 6 | 6 | | | | | | | | | | | | | | |
| Marcel Dupont | Marcel Dupont | 1 | 2 | 1 | | | | | | | | | | | | | | |
| | | | | | | Charles Aeschlimann | Charles Aeschlimann | 10 | 6 | 0 | 4 | 3 | | | | | | |
| | | | | | | A. Felix Poulin | A. Felix Poulin | 8 | 3 | 6 | 6 | 6 | | | | | | |
| A. Felix Poulin | A. Felix Poulin | 6 | 7 | 4 | 6 | | | | | | | | | | | | | |
| Blanc | Blanc | 2 | 5 | 6 | 3 | | | | | | | | | | | | | |
| | | | | | | | | | | | | | A. Felix Poulin | A. Felix Poulin | 3 | 1 | 6 | 1 |
| | | | | | | | | | | | | | Nicolae Mişu | Nicolae Mişu | 6 | 6 | 1 | 6 |
| Nicolae Mişu | Nicolae Mişu | 6 | 11 | 6 | | | | | | | | | | | | | | |
| André Gobert | André Gobert | 3 | 9 | 3 | | | | | | | | | | | | | | |
| | | | | | | Nicolae Mişu | Nicolae Mişu | 6 | 9 | 6 | | | | | | | | |
| | | | | | | Jose Maria Areyzaga | Jose Maria Areyzaga | 2 | 7 | 2 | | | | | | | | |
| Jose Maria Areyzaga | Jose Maria Areyzaga | 3 | 6 | 6 | 6 | | | | | | | | | | | | | |
| Pierre Hirsch | Pierre Hirsch | 6 | 2 | 0 | 4 | | | | | | | | | | | | | |