Match Play third-round preview

CARLSBAD, Calif. -- It's interesting how, after two rounds at the Accenture Match Play Championship, each of the four brackets has taken on a personality of its own.

The Bobby Jones bracket has been dominated by Americans, with four former Ryder Cup players comprising the entire remaining field. The Ben Hogan bracket has been home to the most tightly contested matches, with five of 12 needing extra holes. The Gary Player bracket is the closest to going chalk, as four of the top six seeds remain. And the Sam Snead bracket is Upset City, with one double-digit seed guaranteed a trip to the quarterfinals.

How will the Sweet 16 matches unfold? We break 'em down for you:

Jason Sobel is ESPN.com's golf editor. He can be reached at Jason.Sobel@espn3.com.