The Orioles made room for Kevin Gausman on their 25-man roster by optioning Jake Arrieta to Norfolk. Arrieta, who was recalled on Saturday, but didn’t pitch in a game, hasn’t pitched since May 7 due to shoulder stiffness. Arrieta was scratched from his May 12 start, and when he was finally ready to pitch again, the Orioles needed reinforcements, so they called him up. Gausman’s contract was purchased from Bowie, and he’ll become the team’s 11th starter tonight. Last year, the Orioles used 12 starters, but just six in the first half of the season. To make room for Gausman on the 40-man roster, the Orioles designated pitcher Alex Burnett for assignment. Burnett allowed three earned runs in 1 1/3 innings in two appearances. Arrieta will join a Norfolk staff that looks a lot like a major league one. Starters Zach Britton, Steve Johnson, Jair Jurrens and Josh Stinson, who’ve already pitched for the Orioles this year, are on hand. Tsuyoshi Wada, who’s made two rehab starts, is also on the starting staff. Even though he knew he might get sent down again, Arrieta tweeted a congratulatory message to Gausman on Friday morning and greeted him warmly in the clubhouse on Wednesday. The Orioles claimed Burnett on waivers from Toronto, and it’s likely he’ll pass through and be outrighted to Norfolk.