Padres reliever Jason Adam ruptured a tendon in his left quadriceps and was carted off the field Monday, a major blow to San Diego’s dominant bullpen. Adam was injured in the seventh inning of a 4-3 loss to the Baltimore Orioles. One of several All-Star relievers on the team, Adam said he still needs to get an MRI for confirmation, but he expects the injury to end his season. Adam collapsed as he tried to turn toward Gunnar Henderson’s chopper that went off the mound for an infield single. He immediately signaled for an athletic trainer and grabbed his left knee. The right-hander took the loss against Baltimore and is 8-4 with a 1.93 ERA in 65 appearances.