John Fitzgerald of Australia, who last won a singles title in 1984, upset top-seeded Ivan Lendl, 7-6, 6-4, Thursday night in the third round of the $600,000 U.S. Pro Indoor championships at Philadelphia.
Lendl was visibly bothered by a match on an adjoining court and complained to the umpire at one point. He was also assessed a code violation for slamming his racket and complained about line calls.
Fitzgerald, seeded 16th, won the first-set tiebreaker, 7-3. Ranked 57th in the world, Fitzgerald broke Lendl at love in the seventh game of the second set and won the match in the 10th game at love.
Earlier, defending champion Tim Mayotte saved two match points as he posted a 5-7, 6-2, 7-5 victory over Johan Kriek.
In other third-round matches, Christo van Rensburg beat Paul Annacone, 6-1, 5-7, 6-4; Jorge Lozano upset Jim Pugh, 6-3, 6-7, 6-4; Kevin Curren defeated Marty Davis, 6-3, 6-3; Dan Goldie topped Joey Rive, 3-6, 6-3, 6-2; Sammy Giammalva beat Peter Lindgren, 6-3, 6-3, and Jim Grabb defeated Ken Flach, 6-2, 2-6, 7-5.