DAYTON, Ohio — Given a second chance, T.J. Warren put on a show in the NCAA tournament.The hard-to-guard sophomore forward scored 16 of his 25 points in the second half on Tuesday night, showing why he was the ACC’s player of the year, and North Carolina State led most of the way in a 74-59 victory over Xavier in the NCAA tournament’s First Four.N.C. State (22-12) didn’t have much time to celebrate. The 12th-seeded Wolfpack headed to Orlando, Fla., for a game on Thursday against St. Louis in the Midwest Regional.Warren had the most to do with it. He made up for a freshman tournament flop on the same floor a year earlier and prevented Xavier (21-14) from getting any traction in the second half.“He’s just a great player,” coach Mark Gottfried said.