As action continues on Wednesday in Flushing Meadows, American John Isner is locked into a difficult battle with Belgium's Xavier Malisse in their first round matchup at the 2012 U.S. Open.

Isner won the first set by the score of 6-3, though was caught by Malisse early in the second set, having to battle back to even the set a 6 apiece. Isner has already had nine aces during the match, as well as winning one of three break points thus far.

In other men's singles action, Serbia's Janko Tipsarevic was in early control against France's Guillaume Rufin, taking the first two sets 6-4, 6-3, but has fallen behind after Rufin won the next two sets 6-2, 6-3. Tipsarevic currently holds the lead in the fifth set by the score of 2-1.

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