I've actually been thinking about it for awhile and I'm not really sure who to cut. It would be one of Chris Dickerson, Travis Ishikawa, Ryan Flaherty, Alexi Casilla, and Danny Valencia. This is just what I'd do.
Danny Valencia- He's killer off of LHP. He's had to hit against RHP, and he just can't do that. If a LHP is in the game, one will want Danny Valencia in the line-up. Keep.
Chris Dickerson- If the Orioles were to cut Dickerson, they'd basically have no depth in the outfield. Plus, he hasn't been terrible. Quality defender, good speed, has a little pop. Keep.
Travis Ishikawa- It's a shame for Ishikawa that Davis is on the team. Weak performance so far but should come around in time as he's been very consistent in his career. On The Bubble.
Alexi Casilla- Typically back-up player. Great defender, great speed. Probably wouldn't even be that bad playing 2B full time. Out of options too. Keep.
Ryan Flaherty- He's been hot of late, but somebody has to go, and it'll be good for Ryan to get fulltime AB's, which he won't get with Brian Roberts
on the roster. On the Bubble. I'd cut either Travis Ishikawa or Ryan Flaherty, preferably Ryan Flaherty.