Monterrey WCT 1981
Johan Kriek won the title, beating Vitas Gerulaitis 7–6 3–6 7–6 in the final.
Main draw 32 players
- 1🇦🇷Guillermo VilasRound of 32 · Lost to Bruce Manson
- 2🇺🇸Vitas GerulaitisFinal · Lost to Johan Kriek
- 3🇵🇱Wojtek FibakSemifinals · Lost to Vitas Gerulaitis
- 4🇺🇸Johan KriekFinal · Champion
- 5🇺🇸John SadriQuarterfinals · Lost to Vitas Gerulaitis
- 6🇮🇳Vijay AmritrajSemifinals · Lost to Johan Kriek
- 7🇺🇸Bob LutzRound of 32 · Lost to Nick Saviano
- 8🇲🇽Raul RamirezQuarterfinals · Lost to Wojtek Fibak
- 🇺🇸Bruce MansonQuarterfinals · Lost to Vijay Amritraj
- 🇫🇷Pascal PortesQuarterfinals · Lost to Johan Kriek
- 🇺🇸Butch WaltsRound of 16 · Lost to Bruce Manson
- 🇸🇪Jan NorbackRound of 16 · Lost to Johan Kriek
- 🇺🇸John AustinRound of 16 · Lost to John Sadri
- 🇺🇸Marty RiessenRound of 16 · Lost to Wojtek Fibak
- Q🇺🇸Matthew McDonald#262Round of 16 · Lost to Vijay Amritraj
- 🇺🇸Nick SavianoRound of 16 · Lost to Pascal Portes
- 🇺🇸Sherwood StewartRound of 16 · Lost to Vitas Gerulaitis
- 🇺🇸Tony GiammalvaRound of 16 · Lost to Raul Ramirez
- 🇿🇦Bernie MittonRound of 32 · Lost to Johan Kriek
- 🇬🇧Buster C MottramRound of 32 · Lost to Pascal Portes
- 🇫🇷Christophe Roger-VasselinRound of 32 · Lost to Matthew McDonald
- 🇲🇽Jorge LozanoRound of 32 · Lost to Vijay Amritraj
- 🇺🇸Pat DupreRound of 32 · Lost to Butch Walts
- 🇩🇪Peter ElterRound of 32 · Lost to John Austin
- 🇦🇺Phil DentRound of 32 · Lost to Marty Riessen
- 🇺🇸Richard MeyerRound of 32 · Lost to Raul Ramirez
- 🇺🇸Robert Vant HofRound of 32 · Lost to Sherwood Stewart
- 🇳🇿Russell SimpsonRound of 32 · Lost to Jan Norback
- 🇺🇸Terry MoorRound of 32 · Lost to Vitas Gerulaitis
- 🇨🇿Tomas SmidRound of 32 · Lost to John Sadri
- 🇺🇸Trey WaltkeRound of 32 · Lost to Wojtek Fibak
- Q🇩🇪Wolfgang PoppRound of 32 · Lost to Tony Giammalva