HOUSTON — Andy Pages set career highs with three homers and six RBIs and Shohei Ohtani broke out of a slump with two hits to lead the Los Angeles Dodgers to a 12-2 rout of the Houston Astros Wednesday.Starter Tyler Glasnow allowed a solo home run in the first inning before leaving the game with low back pain before the second. Jack Dreyer (2-3) took over and pitched two scoreless innings for the win as one of six relievers who stepped in to hold Houston to one run after Glasnow’s early departure.Pages connected on a three-run homer off Lance McCullers Jr. (2-3) in a five-run third inning that made it 6-1 and he added a two-run shot in the fifth off Jason Alexander. His solo shot to start the ninth inning came off catcher César Salazar, who moved from behind the plate to the mound for the ninth with the game out of hand and Houston’s bullpen depleted. Ohtani snapped a 0 for 18 skid with a double in the third inning and added an RBI single in the fifth. His hitless streak was the second longest of his career behind an 0 for 19 stretch in 2020.Glasnow allowed a home run to leadoff hitter Brice Matthews before retiring the next three batters, with two strikeouts to end the first. He returned to the mound to warm up before the second inning but appeared to be in dis …