Madison Bumgarners arm checks out fine after MRI Torey Lovullo says

SAN DIEGO — Left-hander Madison Bumgarner is on track to make his next scheduled start after an MRI on his left arm showed no structural damage, manager Torey Lovullo said. “Everything is fine,” Lovullo said. “Just a little bit of fatigue, as we explained. All pitchers go through it at certain points in time. Really, he works hard for the four days in between his starts. I just think we got to get him past that point.” Lovullo said Bumgarner will throw his typical between-starts bullpen this week, and assuming that goes well, will start on Friday at Chase Field,…