Starters
Salty C, 1B
Agon 1B, DH
Pedroia 2B
Scutaro SS
Youk 3B, 1B
Crawford OF
Ellsbury OF
Drew OF
Ortiz DH
Bench
Martin C, 3B, 1B, 5th OF
Tek C
Lowrie Utility
Cameron 4th OF
Pitchers
Lester
Beckett
Buchholz
Lackey
Dice-K
BP
Paps
Bard
Wake
Doubront
That's 22 unless I'm counting wrong, my GF is blabbing in my ear so I could be off lol. 3 spots left. You could go with 3 more BP arms, or 2 and add a 1B/OF type. Looks doable to me