Mookie Betts’ pinch-hit walk-off single wins it in 9th Runs were at a premium on Thursday, at least until the ninth inning. Craig Kimbrel has his latest rough outing in the top of the frame, allowing a go-ahead homer, but old friend Reyes Moronta had it worse, taking the loss in the bottom of the inning. Mookie Betts’ walk-off single gave the Dodgers a hard-fought series win and a 104th victory of the season, this one 3-2 over the D-backs. Moronta allowed a double to start the frame on a pitch Cody Bellinger hit from nearly his shoe tops to…