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LAS VEGAS — March Madness isn't just about filling out — and later trashing — brackets. There are more ways to bet the field in the NCAA Tournament, an event that will consume basketball fans until the first weekend of April. After a batch of first-round upsets, the favorites got shuffled a bit heading into the second round of the tournament. Houston and Alabama were the top favorites after fellow top seeds Purdue and Kansas lost during the opening weekend.
