Isner knocks out Haas; Blake overcomes serve issues to win
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Isner, the ATP Tour's second-tallest player at 6-foot-9, will face Spain's Guillermo Garcia in the quarterfinals.
Haas, ranked 26th in the world, was three match points from winning the second set in a tiebreaker before the 106th-ranked Isner rallied to win.
Fifth-seeded Mardy Fish also advanced, beating Germany's Denis Gremelmayr 6-7 (4), 6-3, 6-3 to make the quarterfinals for the second week in a row. Fish will face the winner of a late match between Nishikori and top-seeded Andy Roddick.
Copyright 2008 by The Associated Press
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