American sports fans are currently engrossed in the NCAA College Basketball Tournament, a.k.a. "March Madness." Even President Obama filled out a Tournament
bracket with his projected winners in the single-elimination format. So far, if you picked the favorites to advance (as Obama mostly did), your bracket is doing nicely: only one team (Arizona) has pulled off a significant upset to get into the "Sweet Sixteen." In betting parlance,
chalk has predominated in the Tournament. But how did
chalk come to be the term associated with favored teams?
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