Instead of going to the World Baseball Classic to pitch for Team USA next week, Chris Perez will be hanging out at the Indians’ spring training complex waiting for his right shoulder to stop aching. Perez was scratched from his appearance against the Chicago White Sox on Friday after being diagnosed with a strained right subscapularis, a large muscle in the shoulder. And Perez isn’t the only Tribe reliever with a disabling injury. Frank Herrmann, who is competing for a job in the bullpen, sprained the right ligament in his elbow and is out indefinitely. Both pitchers sustained the injuries in their last outing, Perez on Monday and Herrmann on Tuesday, when he gave up four runs and five hits — including a home run — in one inning. Perez gave no indication that he was injured in his most recent appearance, throwing one scoreless inning, allowing one hit and striking out one. “Chris felt it in his last outing,” General Manager Chris Antonetti said. “We weren’t sure of what to make of it. He was examined by Lonnie [head trainer Lonnie Soloff] and our medical staff, and they came up with a solution.” The plan is for Perez to cease throwing for seven to 10 days and begin a return to a throwing program when he is free of symptoms. He is expected to pitch in exhibition games in three to four weeks. The key to his starting the season on time is how long it takes for the shoulder to stop hurting. When asked if seven to 10 days was a reasonable time frame, Antonetti said, “That’s a fair assumption.” Of course, nothing is certain, even though the GM is optimistic that Perez will begin the season on time.