Koda Glover’s young major league career has encountered another roadblock. The Nationals right-hander, who missed most of last season with a shoulder injury, reported to spring training last week with shoulder soreness. An MRI exam revealed inflammation and he was shut down. “We’re trying to be very [careful] with him,” Nationals Manager Dave Martinez. If there’s one lesson Glover, a fearless 24-year-old who shot through the minors in 14 months, has learned in his brief time in the big leagues, it’s that pushing through an injury usually isn’t the best idea. He tried to during each of the past two seasons, only to end both on the disabled list, watching the Nationals play in the postseason without him. In 2016, it was a torn labrum in his hip. Last season, he was placed on disabled list in June with what the club initially said was a back injury. Two weeks later, Glover revealed that he was dealing with a shoulder impingement, also known as rotator cuff tendinitis, which was aggravated by the sore back.