HOUSTON –– It was a battle of injured pitchers on Wednesday afternoon at Daikin Park. But in the Dodgers’ 12-2 win over the Astros, only one team could take advantage. The Dodgers’ Andy Pages celebrates with teammates after hitting one of his three home runs Wednesday vs. the Astros. AP While Dodgers starter Tyler Glasnow exited the game early with low back pain, Astros right-hander Lance McCullers Jr. tried to push through what appeared to be a blister. A resurgent Dodgers offense would make him. McCullers not only gave up three early runs but watched all of them score via wild pitches. Then, in the third inning, he surrendered a three-run home run to Andy Pages, the first of three long balls Pages would hit on a day almost everyone else in the Dodgers’ lineup –– including the previously slumping Shohei Ohtani –– also made key contributions. McCullers’ counterpart, Glasnow, suffered from his own physical ailment.…