For a second time in as many spring training starts, Steven Matz allowed five runs. And on Sunday, he did it while recording just one out. Afterward, manager Mickey Callaway called Matz’s performance “a bump in the road.” At some point — and soon — that bump will look considerably more severe for the left-hander, who is coming off a disappointing season and has yet to fulfill the promise he showed following his initial call-up in 2015 and most of 2016. “It’s frustrating,” Matz said of his outing, during which he gave up five runs on five hits and two walks in a 7-3 loss to the Nationals at First Data Field. “Even though it’s spring training, you want to see results.” Matz wasn’t hit especially hard — a bloop single and a grounder through the right side of the infield resulted in three runs — but his lack of command was worrying. Consistently behind batters, Matz has now walked four in just 1 ²/₃ innings this spring — in addition to giving up a whopping 10 runs (54.00 ERA).