Right-hander Andrew Cashner, currently on the disabled list with a lower back strain, is scheduled to have a work day Sunday, and if he comes out of that well, he would likely make his next start Wednesday or Thursday. … Outfielder Colby Rasmus, currently with High-A Frederick, had the best game of his rehab assignment Friday, a two-hit night that included his first home run. Showalter said he is expected to be activated when his rehab window ends next week. “He’s showing everything that he’s healthy and he’s starting to perform,” Showalter said. … After beginning his minor league rehab assignment Friday with Double-A Bowie, third baseman Tim Beckham served as the designated hitter Saturday. The Orioles still believe he will be ready to return when eligible next Saturday. … Showater said he was comfortable using closer Zach Britton for a second straight day if needed Saturday and said Britton will likely be available for closing opportunities next week. Britton wasn’t needed Saturday. … Showalter said right-hander David Hess was available out of the bullpen Saturday. He warmed up, but did not pitch.