<p>ST. PETERSBURG -- Orioles infielder Alexi Casilla will remain in a Tampa Bay area hospital on Monday night as the team travels north after suffering a collision in the bottom of the seventh inning of Baltimore's 5-4 loss to the Rays.</p><p>"Alexi got a pretty good blow to the head," manager Buck Showalter said of Casilla, who stayed in the game to finish the inning before departing and will undergo a CT scan and be monitored overnight. "I kind of found out after the fact. Looking back at it, I decided to get him out of there. I probably should have gotten him out of there from the get-go."</p><p>Casilla, who entered the game for injured third baseman Manny Machado in the top of the seventh, slammed his head into Nick Markakis while trying to make a diving catch on Wil Myers' bases-loaded blooper in shallow right field. The impact of the blow popped the ball out of his glove and allowed Tampa Bay to snap an 0-for-18 bases-loaded streak with a two-run single that tied the game at 4.</p><p>"It was just bang-bang," said Markakis, who was fortunate to absorb the blow with his thigh and not sustain a serious injury. "Me coming full speed. Him coming full speed. It was like trying to stop a train on a dime. It's tough. I'm just glad he is OK. He got banged up a little bit, but when it's all said and done, if he's OK, that's all that really matters."</p><p><a href="http://mlb.mlb.com/news/article.jsp?ymd=20130923&content_id=61493004&notebook_id=61503792&vkey=notebook_bal&c_id=bal">Keep reading...</a></p>