Saint Louis 65, No. 15 Butler 61: Mike McCall Jr. scored 13 of his 18 points in the second half as the visiting Billikens completed a regular-season sweep of the Bulldogs to remain atop the Atlantic 10.Dwayne Evans added 17 points and Kwamain Mitchell tallied 12 for Saint Louis (21-5, 10-2 A-10), which has won nine straight and improved to 4-1 against ranked opponents this season.Kellen Dunham scored all 14 of his points in the first half to lead Butler (22-6, 9-4), which fell 1½ games behind St. Louis with three games left on its schedule. Rotnei Clarke and Roosevelt Jones added 13 apiece for the Bulldogs.The Billikens - third in the conference in field goal percentage - settled for a number of long jumpers in the first half and trailed by as many as nine points. Saint Louis made a concerted effort to get the ball inside after the break and it paid off as the Billikens hit eight consecutive shots - including five layups - at the beginning of the second and took a 48-41 lead.Saint Louis' cushion grew to nine with 10:57 remaining after a 3-pointer from McCall and pair of free throws by Jake Barnett, but five straight points each from Clarke and Jones sparked a 14-6 spurt to get Butler within 59-58. But two free throws from Mitchell and a tip-in by Evans gave the Billikens a bit of a cushion before McCall sank a pair of foul shots with 20 seconds left to secure the victory.GAME NOTEBOOK: Saint Louis has defeated four ranked opponents in the same season for the first time in school history. … Butler's two-game losing streak at Hinkle Fieldhouse is its longest since back-to-back home losses to Valparaiso and Xavier in December 2011. … Eight of the Billikens' nine victories during their winning streak are by double digits.