Zac Gallen hasn’t been the ace pitcher the Arizona Diamondbacks hoped for this postseason. If the right-hander can’t revert to form in Game 5 of the World Series against the Texas Rangers on Wednesday night, there’s a good chance his team’s season will be over. The D-backs are facing postseason elimination after losing 11-7 to the Texas Rangers in Tuesday’s Game 4. Arizona fell into a 10-run hole by the end of the third inning and now trails 3-1 in the best-of-seven series. Gallen started for the National League in this year’s All-Star Game. He has a 2-2 record and a 5.27 ERA so far in October.