MILWAUKEE — Sean Pedulla had 20 points and Dre Davis added 15 as sixth-seeded Ole Miss staved off 11th-seeded North Carolina’s second-half rally for a 71-64 victory in the first round of the NCAA Tournament’s South Region on Friday.Ole Miss (23-11) advanced to the second round Sunday against third-seeded Iowa State (25-9), which rolled past 14th-seeded Lipscomb 82-55 in the first game.North Carolina, which trailed by 22 early in the second half, closed within 66-64 on RJ Davis’ three-point play with 1:09 left. Pedulla countered with a 3-pointer from the top left to make it 69-64.The Tar Heels missed a 3-pointer on their next possession and Pedulla hit a pair of free throws to push the lead to 71-64 with 34.3 seconds left. North Carolina missed its final six shots.Davis had 15 points and Ven-Allen Lubin 14 for the Tar Heels (23-14), who shot 38.1 percent from the field and made just 5 of 24 attempts from 3-point range (20.8 percent).The Tar Heels got back in it with an 11-0 run, pulling within 63-59 with just over five minutes on a thunderous dunk by Jalen Washington with just over five minutes left.North Carolina missed layups on its next three possessions before Pedulla scored on a drive to put Ole Miss up 65-59 with 2:56 remaining.