kiki
Banned
That US Open QF was the last time that Mac would beat Lendl in an official match until February 1983 at Philadelphia (after he had taken advice from Don Budge). He lost all 7 matches they played in 1981-1982. Even in Davis Cup where Mac was king, Lendl beat him in straights in the opening rubber of their QF tie in New York in 1981.
They played out all time classic matches at Dallas in 1983 and RG in 1984. It's just a huge shame that their matches in New York at the US Open and Masters weren't more competitive. 4 out of their 5 matches at the US Open ended in straight set victories one way or another, as did all 5 of their matches at the Masters. Throw in that 1981 Davis Cup rubber, their 2 finals at Forest Hills in 1984 and 1985, and their match at Long Island in 1991, and they played 14 times in total in New York with 13 straight set victories.
IMO the rivalry was as much interesting as anybody else
Those turndowns added to excitment and interest and you would say it was a matter of who got into the other' s mind