With right-hander Chris Tillman on the disabled list until at least early May, the Orioles have been considering alternative rotation options, but ultimately decided to go into the regular season leaning on a group of internal options that include left-hander Jayson Aquino, right-hander Gabriel Ynoa and right-hander Mike Wright. Because of several early off days, the Orioles don't need a fifth starter to fill the hole created by Tillman until April 15.