LEXINGTON, Ky. — The top seed in the NCAA Tournament received a wake-up call Thursday in its first-round game.Now, No. 1 Auburn strives to show up from the start when they play No. 9 Creighton in a second-round South Region game Saturday night at Rupp Arena.Auburn (29-5) led No. 16 seed Alabama State 32-31 with 1:48 left in the first half before a 9-0 run gave them a 41-31 halftime lead. Auburn then went on a 17-7 run to open the second half and undo any upset possibilities.Creighton (25-10) beat No. 8 Louisville to advance to Saturday night’s showdown with the Tigers. The Bluejays went on a 19-2 run late in the first half to put Louisville down 20 and cruised to the victory.The winner moves on to the Sweet 16 and a spot in the South Region semifinal next Friday in Atlanta.Creighton’s Jamiya Neal was torrid from the field in the first round. He made 11 of 16 shots to go with 12 rebounds, while center Ryan Kalkbrenner had 14 points on 6-of-8 shooting.”We won’t beat Creighton playing the way we played (against Alabama State),” Auburn coach Bruce Pearl said. “We can play better. We know we can tighten things up. But that’s the thing about the tournament, we will absolutely get (the chance) the next game.”One of the things that we’ll do, even in a short period of time, we’re going to look at (Thursday). We’re going to look at it a little bit and go, ‘OK, this is how we’re going to (do things) on Saturday against a much better, much bigger, much different kind of a basketball team. Hopefully we can learn.”Auburn’s Johni Broome finished Thursday’s game with 14 points and 11 rebounds. It marked his 19th double-double in three seasons at Auburn, breaking Mike Mitchell’s record of 18 that stood since 1978.”It means a lot to solidify my name in Auburn history and kind of give back to the university,” Broome said.Broome (6-foot-10, 240 pounds) faces off against Kalkbrenner (7-1, 270), who just won Big East Defensive Player of the Year for the fourth time, in a critical matchup between bigs that will be the key to the outcome.