The Orioles wanted no part of another injury to their rotation, but they got one last night, and it sounded pretty bad. Jason Hammel didn't leave the game as a precaution. Not when he described the sharp pain in his knee and how it was the exact same spot that led to his July surgery. He looked and sounded concerned. Hammel thought the surgery corrected the problem. He also looked and sounded confused. The best-case scenario involves scar tissue. Hammel was told that it could cause similar discomfort. And the knee didn't swell up last night, which brought a little bit of encouragement. You've already figured out the worst-case scenario. The Orioles still haven't named a starter for Thursday, and now they have no idea whether Hammel can take his next turn. Where's Joel Pineiro when you need him? The assumption is that Chris Tillman or Wei-Yin Chen will start Thursday, with the other one going on Friday. That would leave Joe Saunders to pitch on six days rest. The off day on Monday allows Showalter to really get creative with the rotation, and the extra starters in the bullpen - including Jake Arrieta, Tommy Hunter and Steve Johnson - allow him to cover for Hammel if the right-hander needs to be skipped. He'd just prefer not to lose Hammel for the rest of the season. That possibility already had crept into Hammel's head as he stood at his locker last night and took questions from reporters. He tried to push it aside, but it wasn't budging. Team Resilient will take the field again tonight as if nothing is wrong. It could use a nice, long, drama-free outing from Miguel Gonzalez, who's 2-0 with a 1.93 ERA in his last two home starts. It could use a night when the final score isn't secondary to the latest health crisis. NOTE: Teams are releasing their 2013 schedules, and as expected, the Orioles open next season at Tropicana Field. They play the Rays April 2-4 before heading to Camden Yards to face the Twins. The Orioles are expected to release their schedule later today. The Rays' became public earlier, which confirmed their dates against the Orioles.