# 1984 U.S. Pro Indoor – Singles

John McEnroe was the defending champion.
McEnroe successfully defended his title, defeating Ivan Lendl, 6–3, 3–6, 6–3, 7–6 in the final.

## Seeds

* Ivan Lendl (final)
* John McEnroe (champion)
* Yannick Noah (semifinals)
* Jimmy Arias (quarterfinals)
* Bill Scanlon (second round)
* Kevin Curren (withdrew)
* Gene Mayer (second round)
* Eliot Teltscher (quarterfinals)
* Johan Kriek (third round)
* Tim Mayotte (second round)
* Tomáš Šmíd(quarterfinals)
* Brian Gottfried (second round)
* Henrik Sundström (second round)
* Heinz Günthardt (third round)
* Scott Davis (third round)
* Henri Leconte (third round)

## 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 | Final | Final | Final | Final | Final | Final |
| 1 | Ivan Lendl | 6 | 6 | | | | | | |
| 3 | Yannick Noah | 3 | 4 | | | | | | |
| 3 | Yannick Noah | 3 | 4 | 1 | Ivan Lendl | 3 | 6 | 3 | 6 |
| | | | | 2 | John McEnroe | 6 | 3 | 6 | 7 |
| | Wojtek Fibak | 2 | 6 | 2 | John McEnroe | 6 | 3 | 6 | 7 |
| 2 | John McEnroe | 6 | 7 | | | | | | |

### 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | I Lendl | 6 | 6 | | | | | | | | | |
| | F Segărceanu | 4 | 2 | | | S Simonsson | 3 | 0 | | | | | | | | | |
| | S Simonsson | 6 | 6 | | | | | | 1 | I Lendl | 6 | 6 | | | | | |
| | Ti Gullikson | 6 | 6 | | | | | | | Ti Gullikson | 1 | 2 | | | | | |
| | C Dowdeswell | 4 | 2 | | | Ti Gullikson | 6 | 6 | | | | | | | | | |
| | | | | | 12 | B Gottfried | 0 | 3 | | | | | | | | | |
| | | | | | | | | | | | | | 1 | I Lendl | 3 | 6 | 6 |
| | | | | | | | | | | | | | | B Gilbert | 6 | 2 | 1 |
| | | | | | 9 | J Kriek | 6 | 6 | | | | | | | | | |
| | V Pecci | 3 | 3 | | Q | V Van Patten | 4 | 4 | | | | | | | | | |
| Q | V Van Patten | 6 | 6 | | | | | | 9 | J Kriek | 6 | 2 | | | | | |
| Q | J Lloyd | 6 | 7 | 2 | | | | | | B Gilbert | 7 | 6 | | | | | |
| | B Gilbert | 7 | 5 | 6 | | B Gilbert | 6 | 6 | | | | | | | | | |
| | | | | | 5 | B Scanlon | 4 | 2 | | | | | | | | | |

#### 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 3 | Y Noah | 7 | 6 | | | | | | | | | |
| | M Bauer | 4 | 1 | | | H Solomon | 6 | 1 | | | | | | | | | |
| | H Solomon | 6 | 6 | | | | | | 3 | Y Noah | 7 | 6 | | | | | |
| | N Odizor | 6 | 6 | | | | | | 16 | H Leconte | 6 | 3 | | | | | |
| Q | Joe Heldmann | 4 | 2 | | | N Odizor | 1 | 1 | | | | | | | | | |
| | | | | | 16 | H Leconte | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | 3 | Y Noah | 6 | 1 | 6 |
| | | | | | | | | | | | | | 8 | E Teltscher | 3 | 6 | 2 |
| | | | | | 13 | H Sundström | 3 | 1 | | | | | | | | | |
| | S Edberg | 7 | 1 | 3 | | E Korita | 6 | 6 | | | | | | | | | |
| | E Korita | 6 | 6 | 6 | | | | | | E Korita | 6 | 1 | | | | | |
| | G Michibata | 6 | 6 | | | | | | 8 | E Teltscher | 7 | 6 | | | | | |
| | F Buehning | 3 | 3 | | | G Michibata | 4 | 1 | | | | | | | | | |
| | | | | | 8 | E Teltscher | 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 |
| | | | | | 7 | G Mayer | 7 | 4 | 3 | | | | | | | | | |
| Q | S Meister | 5 | 1 | | Q | B Testerman | 6 | 6 | 6 | | | | | | | | | |
| Q | B Testerman | 7 | 6 | | | | | | | Q | B Testerman | 6 | 6 | 4 | | | | |
| | W Fibak | 6 | 6 | | | | | | | | W Fibak | 7 | 3 | 6 | | | | |
| | To Gullikson | 2 | 1 | | | W Fibak | 3 | 6 | 7 | | | | | | | | | |
| | | | | | 10 | T Mayotte | 6 | 3 | 5 | | | | | | | | | |
| | | | | | | | | | | | | | | | | W Fibak | 6 | 7 |
| | | | | | | | | | | | | | | | 4 | J Arias | 3 | 6 |
| | | | | | 14 | H Günthardt | 6 | 6 | | | | | | | | | | |
| | R Harmon | 1 | 5 | | | L Pimek | 3 | 3 | | | | | | | | | | |
| | L Pimek | 6 | 7 | | | | | | | 14 | H Günthardt | 7 | 2 | 6 | | | | |
| | E Fromm | 2 | 7 | 7 | | | | | | 4 | J Arias | 5 | 6 | 7 | | | | |
| | M Dickson | 6 | 6 | 5 | | E Fromm | 4 | 6 | | | | | | | | | | |
| | | | | | 4 | J Arias | 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 |
| | | | | | LL | B Walts | 7 | 6 | | | | | | | | | | |
| | R Van't Hof | 5 | 6 | 6 | | R Van't Hof | 6 | 1 | | | | | | | | | | |
| | C Roger-Vasselin | 7 | 0 | 3 | | | | | | LL | B Walts | 6 | 3 | 2 | | | | |
| | A Krickstein | 7 | 7 | | | | | | | 11 | T Šmid | 4 | 6 | 6 | | | | |
| Q | D Pate | 6 | 5 | | | A Krickstein | 5 | 0 | | | | | | | | | | |
| | | | | | 11 | T Šmid | 7 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | | 11 | T Šmid | 0 | 3 |
| | | | | | | | | | | | | | | | 2 | J McEnroe | 6 | 6 |
| | | | | | 15 | S Davis | 7 | 2 | 6 | | | | | | | | | |
| | S Giammalava Jr. | 6 | 6 | | | S Giammalava Jr. | 5 | 6 | 4 | | | | | | | | | |
| | S Denton | 2 | 2 | | | | | | | 15 | S Davis | 1 | 2 | | | | | |
| | J Brown | 4 | 7 | 4 | | | | | | 2 | J McEnroe | 6 | 6 | | | | | |
| | P Fleming | 6 | 5 | 6 | | P Fleming | 4 | 2 | | | | | | | | | | |
| | | | | | 2 | J McEnroe | 6 | 6 | | | | | | | | | | |