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NCAA Tournament's upset-free first round has led to Sweet 16 humdingers. Plus: Why is time so time-consuming? And: Replays.

This is the payoff for the upset-challenged first weekend of the NCAA Tournament: You can purchase Pac 10 tournament tickets for all rounds of the Pac 10 tournament. Strong, evenly matched top seeds are meeting in the Sweet 16 and beyond. Three of Thursday's four games were humdingers. The other, UCLA's grinding win over its stylistic ancestor, Pittsburgh, paled only in comparison.

Ohio State came back from 20 points down to Tennessee, sealing an 85-84 win with center Greg Oden's flying block of Ramar Smith's would-be game-winning runner. Kansas survived a brutal defensive challenge from Southern Illinois, winning by three despite scoring only 61 points, the Jayhawks' second-lowest total of the year, their lowest in a win.

Memphis outlasted Texas A&M 65-64 in what was essentially a home game for the Aggies in San Antonio.

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