# 1986 Livingston Open – Singles

Brad Gilbert was the defending champion.
Gilbert successfully defended his title, defeating Mike Leach 6–2, 6–2 in the final.

## Seeds

* Tim Mayotte (first round)
* Brad Gilbert (champion)
* Paul Annacone (second round)
* Matt Anger (second round)
* Ramesh Krishnan (quarterfinals)
* Brian Teacher (first round)
* Greg Holmes (quarterfinals)
* Bud Schultz (first 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 |
| | Mike Leach | 6 | 6 | | | | |
| | Wally Masur | 2 | 4 | | | | |
| | Wally Masur | 2 | 4 | | Mike Leach | 2 | 2 |
| | | | | 2 | Brad Gilbert | 6 | 6 |
| Q | Christo van Rensburg | 3 | 4 | 2 | Brad Gilbert | 6 | 6 |
| 2 | Brad Gilbert | 6 | 6 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals |
| 1 | T Mayotte | 4 | 2 | | | | | | | | | | | | | | |
| | N Odizor | 6 | 6 | | | N Odizor | 6 | 3 | 6 | | | | | | | | |
| | M Leach | 6 | 6 | | | M Leach | 3 | 6 | 7 | | | | | | | | |
| | C Hooper | 1 | 4 | | | | | | | | M Leach | 4 | 7 | 6 | | | |
| LL | H Herr | 6 | 6 | | | | | | | 7 | G Holmes | 6 | 6 | 4 | | | |
| | V Van Patten | 4 | 1 | | LL | H Herr | 6 | 4 | 0 | | | | | | | | |
| | M Freeman | 4 | 3 | | 7 | G Holmes | 4 | 6 | 6 | | | | | | | | |
| 7 | G Holmes | 6 | 6 | | | | | | | | | | | | M Leach | 6 | 6 |
| 4 | M Anger | 6 | 6 | | | | | | | | | | | | W Masur | 2 | 4 |
| Q | K Jones | 3 | 4 | | 4 | M Anger | 2 | 4 | | | | | | | | | |
| | J Lapidus | 7 | 6 | | | J Lapidus | 6 | 6 | | | | | | | | | |
| | G Muller | 6 | 2 | | | | | | | | J Lapidus | 3 | 4 | | | | |
| Q | E Korita | 7 | 6 | | | | | | | | W Masur | 6 | 6 | | | | |
| | V Amritraj | 6 | 4 | | Q | E Korita | 2 | 4 | | | | | | | | | |
| | W Masur | 4 | 7 | 7 | | W Masur | 6 | 6 | | | | | | | | | |
| 6 | B Teacher | 6 | 5 | 5 | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | R Krishnan | 7 | 6 | | | | | | | | | | | | | | |
| | P Fleming | 5 | 1 | | 5 | R Krishnan | 6 | 6 | | | | | | | | | |
| WC | J Blake | 6 | 6 | | WC | J Blake | 0 | 3 | | | | | | | | | |
| Q | S Denton | 2 | 3 | | | | | | | 5 | R Krishnan | 4 | 1 | | | | |
| WC | L Jensen | 4 | 0 | | | | | | | Q | C van Rensburg | 6 | 6 | | | | |
| Q | C van Rensburg | 6 | 6 | | Q | C van Rensburg | 6 | 3 | 6 | | | | | | | | |
| | M Davis | 3 | 6 | 5 | 3 | P Annacone | 4 | 6 | 3 | | | | | | | | |
| 3 | P Annacone | 6 | 2 | 7 | | | | | | | | | | Q | C van Rensburg | 3 | 4 |
| 8 | B Schultz | 1 | 1 | | | | | | | | | | | 2 | B Gilbert | 6 | 6 |
| | S Giammalva Jr. | 6 | 6 | | | S Giammalva Jr. | 6 | 6 | | | | | | | | | |
| | K Flach | 4 | 4 | | | R Acuña | 4 | 2 | | | | | | | | | |
| | R Acuña | 6 | 6 | | | | | | | | S Giammalva Jr. | 3 | 4 | | | | |
| | T Nelson | 0 | 6 | 6 | | | | | | 2 | B Gilbert | 6 | 6 | | | | |
| WC | P McEnroe | 6 | 4 | 4 | | T Nelson | 1 | 4 | | | | | | | | | |
| | B Green | 3 | 3 | | 2 | B Gilbert | 6 | 6 | | | | | | | | | |
| 2 | B Gilbert | 6 | 6 | | | | | | | | | | | | | | |