The Los Angeles Dodgers have learned how to win for long stretches without Clayton Kershaw and might need to do so again.Jorge Alfaro drove in two runs, Aaron Nola pitched seven innings of two-hit ball and the Philadelphia Phillies beat the Dodgers 2-1 Thursday, spoiling Kershaw’s first start in almost a month. Kershaw, who returned after spending 30 days on the disabled list for left biceps tendinitis, admitted after the game another DL trip might be necessary — this time for a third back injury in three seasons. He is expected to undergo an MRI and will not travel with the team for this weekend’s series at Colorado.”I’m not ‘woe is me.’ I don’t feel sorry for me or for us or anything like that,” Kershaw said. “I’m frustrated, disappointed I can’t contribute to the team. Being on the DL’s no fun. So hopefully I get to maybe avoid that. I’ll have to see what happens with the MRI.” Kershaw missed more than two months with a back issue in 2016, and a separate back problem last year cost him five weeks. He called that 2016 injury “very, very severe” and said this one feels more like what he dealt with last season.The Dodgers have gone 75-46 in the past three years without Kershaw, good for a .620 winning percentage. This year, the Dodgers were 14-12 without their ace.