Despite the fact that he is mired in a bit of a slump, the Rockies' Clint Barmes is worth a look. Even after going 3 for his last 19, Barmes is still hitting .280 on the season and with shortstop Troy Tulowitzki out 4-8 weeks and maybe longer due to a torn tendon in his left quadriceps, the middle infielder will shift from second base to shortstop.
He had already beaten out Jayson Nix to nab the second base job in Colorado, but now he will move back to the spot that once belonged to him. This dual position eligibility only increases his value and makes him a savvy middle infielder option in AL-only and deeper mixed leagues. The recent slump has dropped him down to either 7 or 8 in the order, which obviously is not as good as hitting in front of Matt Holliday, Todd Helton, and Garrett Atkins, but I still expect Barmes to snap out of the slump and put up respectable numbers in an above average Rockies' lineup.
The guy is not going to be a star, however, I do expect him to be a nice stop gap option for the short-term and one that is showing up more and more on the fantasy radar.