# 1970 ITPA Open Indoor – Men's singles

Rod Laver was the defending champion.
Laver successfully defended his title, defeating Tony Roche 6–3, 8–6, 6–2 in the final.

## Seeds

* Rod Laver (champion)
* Tony Roche (final)
* John Newcombe (semifinals)
* Tom Okker (third round)
* Ken Rosewall (second round)
* Andrés Gimeno (first round)
* Fred Stolle (third round)
* Arthur Ashe (third round)
* Roy Emerson (third round)
* Earl Butch Buchholz (quarterfinals)
* Stan Smith (third round)
* Dennis Ralston (semifinals)

## 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

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | Rod Laver | 8 | 6 | 6 | | | | | |
| 12 | Dennis Ralston | 6 | 1 | 4 | | | | | |
| 12 | Dennis Ralston | 6 | 1 | 4 | 1 | Rod Laver | 6 | 8 | 6 |
| | | | | | 2 | Tony Roche | 3 | 6 | 2 |
| 3 | John Newcombe | 0 | 3 | 4 | 2 | Tony Roche | 3 | 6 | 2 |
| 2 | Tony Roche | 6 | 6 | 6 | | | | | |

### Top half
#### Section 1

| 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 | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | R Laver | 6 | 6 | | | | | | | | | | |
| | | | | | | G Stilwell | 2 | 3 | | | | | | | | | | |
| | | | | | | | | | 1 | R Laver | 4 | 6 | 6 | | | | | |
| | | | | | | | | | 9 | R Emerson | 6 | 3 | 4 | | | | | |
| | | | | | | J Fillol | 0 | 4 | | | | | | | | | | |
| | | | | | 9 | R Emerson | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | 1 | R Laver | 4 | 6 | 8 |
| | R Taylor | 6 | 8 | | | | | | | | | | | | I Năstase | 6 | 2 | 6 |
| Q | J Borowiak | 3 | 6 | | | R Taylor | 6 | 6 | | | | | | | | | | |
| Q | H Fitzgibbon | 6 | 6 | | Q | H Fitzgibbon | 4 | 1 | | | | | | | | | | |
| LL | I Buding | 3 | 2 | | | | | | | R Taylor | 4 | 4 | | | | | | |
| Q | J Singh | 6 | 3 | 5 | | | | | | I Năstase | 6 | 6 | | | | | | |
| | B Carmichael | 4 | 6 | 7 | | B Carmichael | 2 | 1 | | | | | | | | | | |
| | I Năstase | 6 | 7 | | | I Năstase | 6 | 6 | | | | | | | | | | |
| 6 | A Gimeno | 2 | 5 | | | | | | | | | | | | | | | |

#### Section 2

| 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 | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 5 | K Rosewall | 6 | 6 | | | | | | | | | | | | | | |
| | R Barth | 1 | 3 | | 5 | K Rosewall | 3 | 2 | | | | | | | | | |
| | C Graebner | 6 | 4 | 6 | | C Graebner | 6 | 6 | | | | | | | | | |
| | P Lall | 1 | 6 | 4 | | | | | | C Graebner | 6 | 4 | 6 | | | | |
| | J McManus | 8 | 6 | | | | | | | M Santana | 3 | 6 | 3 | | | | |
| | T Ulrich | 6 | 1 | | | J McManus | 2 | 2 | | | | | | | | | |
| | I El Shafei | 3 | 2 | | | M Santana | 6 | 6 | | | | | | | | | |
| | M Santana | 6 | 6 | | | | | | | | | | | | C Graebner | 6 | 4 |
| | | | | | | | | | | | | | | 12 | D Ralston | 8 | 6 |
| | | | | | 12 | D Ralston | 7 | 6 | | | | | | | | | |
| | | | | | | I Țiriac | 5 | 3 | | | | | | | | | |
| | | | | | | | | | 12 | D Ralston | 6 | 6 | 6 | | | | |
| | | | | | | | | | 4 | T Okker | 1 | 8 | 3 | | | | |
| | | | | | Q | Donald Lutz | 3 | 1 | | | | | | | | | |
| | | | | | 4 | T Okker | 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 | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 3 | J Newcombe | 6 | 6 | | | | | | | | | | | |
| | | | | | | T Koch | 4 | 4 | | | | | | | | | | | |
| | | | | | | | | | | 3 | J Newcombe | 6 | 6 | 7 | | | | | |
| | | | | | | | | | | | J Osborne | 3 | 8 | 5 | | | | | |
| | | | | | | J Osborne | 6 | 8 | 8 | | | | | | | | | | |
| | | | | | | Ž Franulović | 8 | 6 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 3 | J Newcombe | 8 | 3 | 8 |
| 10 | EB Buchholz | 3 | 6 | 6 | | | | | | | | | | | 10 | EB Buchholz | 6 | 6 | 6 |
| | M Cox | 6 | 2 | 3 | 10 | EB Buchholz | 6 | 6 | | | | | | | | | | | |
| | N Pilić | 6 | 6 | | | N Pilić | 2 | 2 | | | | | | | | | | | |
| Q | H-J Plötz | 2 | 2 | | | | | | | 10 | EB Buchholz | 6 | 1 | 6 | | | | | |
| | J Kodeš | 2 | 8 | 0 | | | | | | 7 | F Stolle | 4 | 6 | 3 | | | | | |
| | T Gorman | 6 | 6 | 6 | | T Gorman | 6 | 6 | | | | | | | | | | | |
| Q | B Seewagen | 2 | 5 | | 7 | F Stolle | 8 | 8 | | | | | | | | | | | |
| 7 | F Stolle | 6 | 7 | | | | | | | | | | | | | | | | |

#### Section 4

| 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 |
| 8 | A Ashe | 6 | 6 | | | | | | | | | | | | | | | |
| Q | J Loyo-Mayo | 2 | 1 | | 8 | A Ashe | 6 | 8 | 6 | | | | | | | | | |
| | H Rahim | 7 | 8 | | | H Rahim | 8 | 6 | 2 | | | | | | | | | |
| | R Moore | 5 | 6 | | | | | | | 8 | A Ashe | 4 | 6 | 6 | | | | |
| | C Richey | 6 | 3 | 6 | | | | | | | C Richey | 6 | 4 | 8 | | | | |
| | R Holmberg | 4 | 6 | 3 | | C Richey | 6 | 6 | | | | | | | | | | |
| | R Lutz | 3 | 3 | | | M Riessen | 4 | 2 | | | | | | | | | | |
| | M Riessen | 6 | 6 | | | | | | | | | | | | | C Richey | 2 | 1 |
| | | | | | | | | | | | | | | | 2 | T Roche | 6 | 6 |
| | | | | | 11 | S Smith | 8 | 6 | | | | | | | | | | |
| | | | | | | C Pasarell | 6 | 4 | | | | | | | | | | |
| | | | | | | | | | | 11 | S Smith | 3 | 2 | | | | | |
| | | | | | | | | | | 2 | T Roche | 6 | 6 | | | | | |
| | | | | | LL | R Russell | 1 | 3 | | | | | | | | | | |
| | | | | | 2 | T Roche | 6 | 6 | | | | | | | | | | |