Jake Arrieta and Chris Tillman have been exasperating for the Orioles. In six starts, neither has even gotten an out in the sixth inning. This makes for an overworked bullpen and a dilemma for manager Buck Showalter. In order to rectify this, he’d have to adjust the starting rotation, and without an off day until May 6, he can’t easily separate Arrieta and Tillman in the rotation. “Seven days from now, you could be talking about two other guys,’ Showalter said, dismissing the notion. “They’re capable of better, and they will [be]. I’m not trying to rationalize it, but maybe I am that you give us five innings and a chance to win [against] two American League East teams,” Showalter said. “We hope they get deeper.” Freddy Garcia, who the Orioles signed to a minor league contract on March 29, pitched brilliantly for Norfolk on Wednesday, and would likely be the first option if the team looked elsewhere for a substitute. Jair Jurrjens is pitching well, too. Both Garcia and Jurrjens would have to be added to the 40-man roster. Steve Johnson would have probably be their first choice, but he’s been injured, and is still a couple of weeks away from being major league ready.