Second seed Simon advances to Indianapolis quarterfinals
Need the scores from any match played in this or any other tournament? Results
"I just tried to put the ball inside. Nothing more," the Frenchman said. "I don't know why I lost the second set and won the third set 6-love."
Isner won just 5-of-27 of Haas' first serves and 5-of-26 second serves.
"My second serve was very good today," Haas said. "I used that to move him around a bit.
"I was glad to get a break early. You want to try to get a good start, because once he gets up in breaks and gets relaxed with his serve, he's tough."
Third-seeded Dmitry Tursunov of Russia, the defending champion, advanced to the quarterfinal round when his opponent, American Wayne Odesnik, withdrew with a back injury before the night's final match.
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