Four networks — CBS, TBS, TNT and truTV — cover today’s action. And there’s lots of Cinderella second-round action, with double-digit seeds still alive. On CBS at noon ET, East No. 2 Purdue faces No. 10 Butler — and after that game on the same network, Midwest No. 11 Syracuse faces No. 3 Michigan State. Other games played this afternoon by double-digit second-rounders include South No. 16 University of Maryland Baltimore City vs. No. 9 Kansas State, on truTV,