Mike Pesca

Any recreational league basketball team, any police athletic league squad and every group of 8-year-olds who wear the same uniform are, on the first or second day of practice, introduced to the 2-3 zone defense.

The coach will say, "On defense, you two short guys stay near the foul ...

The Louisville Cardinals are among the teams dominating at this year's men's Division 1 NCAA basketball tournament, which resumes Thursday night. The team credits harassing, active defense for its wins.

But there's something else at work, too: deflections. The team puts a lot of stock in them, though deflections aren't ...