# 1988 Frankfurt Cup – Singles

Tim Mayotte successfully defended his title by defeating Leonardo Lavalle 4–6, 6–4, 6–3 in the final.

## Seeds

* Tim Mayotte (champion)
* Henri Leconte (second round)
* Anders Järryd (semifinals)
* Brad Gilbert (quarterfinals)
* Derrick Rostagno (second round)
* Jim Pugh (semifinals)
* Patrik Kühnen (quarterfinals)
* Christian Saceanu (quarterfinals, retired)

## 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 | Tim Mayotte | 7 | 6 | | | | | | |
| 6 | Jim Pugh | 5 | 4 | | | | | | |
| 6 | Jim Pugh | 5 | 4 | | 1 | Tim Mayotte | 4 | 6 | 6 |
| | | | | | | Leonardo Lavalle | 6 | 4 | 3 |
| 3 | Anders Järryd | 6 | 5 | 1 | | Leonardo Lavalle | 6 | 4 | 3 |
| | Leonardo Lavalle | 1 | 7 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | T Mayotte | 6 | 3 | 6 | | | | | | | | | | | | | |
| | L Pimek | 1 | 6 | 1 | 1 | T Mayotte | 6 | 6 | | | | | | | | | |
| | J Potier | 2 | 3 | | | A Moreno | 3 | 0 | | | | | | | | | |
| | A Moreno | 6 | 6 | | | | | | 1 | T Mayotte | 6 | 6 | | | | | |
| | T Svantesson | 3 | 3 | | | | | | 7 | P Kühnen | 3 | 0 | | | | | |
| | R Osterthun | 6 | 6 | | | R Osterthun | 5 | 1 | | | | | | | | | |
| WC | N Kulti | 7 | 4 | 3 | 7 | P Kühnen | 7 | 6 | | | | | | | | | |
| 7 | P Kühnen | 6 | 6 | 6 | | | | | | | | | | 1 | T Mayotte | 7 | 6 |
| 4 | B Gilbert | 6 | 6 | | | | | | | | | | | 6 | J Pugh | 5 | 4 |
| | J Frana | 1 | 0 | | 4 | B Gilbert | 6 | 6 | | | | | | | | | |
| | T Nijssen | 6 | 6 | 4 | | J Bates | 4 | 3 | | | | | | | | | |
| | J Bates | 4 | 7 | 6 | | | | | 4 | B Gilbert | 6 | 2 | 6 | | | | |
| | O Delaître | 6 | 6 | | | | | | 6 | J Pugh | 4 | 6 | 7 | | | | |
| Q | D Buljević | 4 | 4 | | | O Delaître | 2 | 5 | | | | | | | | | |
| | E Masso | 2 | 7 | 1 | 6 | J Pugh | 6 | 7 | | | | | | | | | |
| 6 | J Pugh | 6 | 5 | 6 | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | D Rostagno | 6 | 7 | | | | | | | | | | | | | | | |
| | C Limberger | 1 | 6 | | 5 | D Rostagno | 6 | 4 | | | | | | | | | | |
| Q | HD Beutel | 3 | 6 | | | S Guy | 7 | 6 | | | | | | | | | | |
| | S Guy | 6 | 7 | | | | | | | S Guy | 6 | 0 | 4 | | | | | |
| Q | G Ivanišević | 6 | 7 | | | | | | 3 | A Järryd | 4 | 6 | 6 | | | | | |
| | I Kley | 2 | 5 | | Q | G Ivanišević | 4 | 3 | | | | | | | | | | |
| | D Marcelino | 2 | 6 | 5 | 3 | A Järryd | 6 | 6 | | | | | | | | | | |
| 3 | A Järryd | 6 | 4 | 7 | | | | | | | | | | 3 | A Järryd | 6 | 5 | 1 |
| 8 | C Saceanu | 6 | 6 | | | | | | | | | | | | L Lavalle | 1 | 7 | 6 |
| WC | D Dier | 0 | 2 | | 8 | C Saceanu | 6 | 6 | | | | | | | | | | |
| | M Střelba | 6 | 1 | | | M Rackl | 2 | 3 | | | | | | | | | | |
| | M Rackl | 7 | 6 | | | | | | 8 | C Saceanu | | | | | | | | |
| | L Lavalle | 6 | 6 | 6 | | | | | | L Lavalle | w/o | | | | | | | |
| Q | K Jones | 7 | 3 | 2 | | L Lavalle | 6 | 7 | | | | | | | | | | |
| | R Leach | 6 | 1 | | 2/WC | H Leconte | 4 | 5 | | | | | | | | | | |
| 2/WC | H Leconte | 7 | 6 | | | | | | | | | | | | | | | |