All ADP values from ESPN. Analysis based on 5x5 roto, mixed, non-keeper 10 or 12-team leagues.
Erick Aybar (ADP 143)
Finished last year 8th among shortstops, and now being drafted 13th. The Angels lineup has added a guy named Pujols (and hopefully, a guy named Kendry). So if Aybar continues to bat leadoff, there is no reason he can't improve on last season's 71 runs scored. He will help you in steals and runs and won't hurt you in the other categories.
Emilio Bonifacio (ADP 172)
I'm not a big believer in Bonifacio's hitting skills, but his position flexibility and speed plays in roto leagues, and he could be batting second in an improved lineup. If he can keep up his improved walk rate from last year, he'll be a value. Consider him a steals specialist at a very thin position who can fit your team if you have power at other positions. Don't expect the same batting average as last year.
Yunel Escobar (ADP 214)
The love for Marco Scutaro has apparently gone too far, because I'd rather wait 42 picks and get the same stats from Yunel. .280/10/5 is boring but you could do worse in your middle infield spot.
Zack Cozart (ADP 260)
Going undrafted in 10 team mixed leagues, Cozart appears to have the starting gig and seems recovered from his injury. Has the power / speed combo and upside to help in your middle infield spot. Batting average could be a problem but .250 should be his floor.
Overrated at shortstop:
Jimmy Rollins (52), Marco Scutaro (172)