1988 OTB Open – Men's singles

Jaime Yzaga was the defending champion, but did not participate this year.

Tim Mayotte won the tournament, beating Johan Kriek in the final, 5–7, 6–3, 6–2.

Seeds
• # 🇺🇸 Tim Mayotte (champion)

• # 🇺🇸 Paul Annacone (second round)

• # 🇺🇸 Johan Kriek (final)

• # 🇺🇸 Michael Kures (first round)

• # 🇨🇦 Martin Laurendeau (first round)

• # 🇺🇸 Richard Matuszewski (second round)

• # Michael Robertson (first round)

• # 🇸🇪 Rikard Bergh (first round)