PITTSBURGH (AP) — Lawrence Butler hit a go-ahead, three-run homer, Nick Kurtz added a solo shot and the Athletics beat the Pittsburgh Pirates 4-3 on Friday night. Mitch Keller didn’t allow a baserunner until Kurtz, a native of Lancaster, Pennsylvania, homered with two outs in the fourth to get the Athletics within 3-1. It was the 33rd homer for Kurtz, who had plenty of family and friends in attendance as he tied Jose Canseco (1986) for the second-most home runs by an A’s rookie. Mark McGwire hit 49 in 1987. Carlos Cortes had a one-out single in the fifth and Zack Gelof walked with two outs before Butler launched his 21st home run, a 424-foot shot to right-center, to put the Athletics up 4-3. Spencer Horwitz, Bryan Reynolds and Nick Gonzales drove in first-inning runs against Luis Severino for a 3-0 lead. Severino (7-11) allowed three runs — one earned — on seven hits in five innings. Michael Kelly retired Tommy Pham on a double-play grounder with one out and runners on the corners in the ninth for his second big league save. Keller (6-15) gave up four runs on four hits in five innings. Gelof left in the bottom of the fifth after re-injuring his right wrist diving for a ball between first and second. The second baseman underwent surgery on March 26 and has played just 30 games this season. The Athletics (73-81) have won two straight and seven of eight, while the Pirates (65-89) have lost five in a row and 12 of 13.