The Rangers are tied in points with the eighth-place New York Islanders, but own the tiebreakers.

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It was a vastly different, more tactical battle on Sunday, with the first two tight sets decided in tiebreakers.

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For once, it was Roddick who was outserved as Ljubicic fired 20 aces and was particularly dominant in the tiebreakers.

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The 20-year-old Argentinean took the Swiss world No. 1 to five sets, including two tiebreakers that went Del Potro's way, winning 3-6 7-6 (7-5) 4-6 7-6 (7-4) 6-2.

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When there are more applicants than spaces available, and when a school is not considered "racially balanced, " race is one of several "integration tiebreakers" used to achieve diversity.

CNN: Divided court rejects school diversity plans

Some continue to call for a shot clock, mandatory tiebreakers in fifth sets (the U.S. Open is the only Slam that does this) and playing service lets (if a serve hits the net and goes in the correct box, it counts).

WSJ: A Little Night Tennis, Anyone?

The result won't always conform with a sense of how close the matches were: A winner of a five-setter in which he dropped two sets in tiebreakers and won the other three sets 6-0 probably would have a higher dominance ratio than a straight-sets win in which each set was decided by a tiebreaker.

WSJ: Heard on the Pitch