The Los Angeles Dodgers have placed All-Star right-handed pitcher Tyler Glasnow on the injured list with back spasms ahead of Friday's series opener against the Atlanta Braves. Right-handed pitcher Paul Gervase has been called up from Triple-A to replace him on the active roster. Glasnow left his start against the Houston Astros on Wednesday after just one inning due to back spasms. Glasnow felt the spasms flare up while he was warming up ahead of the second inning. After the game, he didn't sound too concerned with the injury, something he's dealt with throughout his life since a high school growth spurt. “It kind of just gives out,” Glasnow said of the back spasms. “I’ve gotten it since high school. Being tall, I guess. I get it a couple times a year. Just a warm-up pitch and it gave out. I tried to throw another one and it just was like too hard to bend over. “But it’s not too serious. I’ve had this a few times. Just one of those things where it’s thrown out. Once it feels better, it feels better.…