Brad Miller, 2B/SS, Mariners (18.1 Percent Owned)
The 23-year-old Miller has been steady since his callup, with a .745 OPS, 19 extra-base hits and four swipes over 230 at-bats.
Dillon Gee, RHP, Mets (13.5 Percent Owned)
After bottoming out with a 6.34 ERA on May 25, Gee really has turned his season around, compiling a 2.47 ERA since.
Dayan Viciedo, OF, White Sox (26.9 Percent Owned)
It's been a disappointing 2013 for a guy who smacked 25 homers, but Viciedo is 17-for-48 (.354) with a pair of jacks and 14 RBI in his past 13 games.
Dustin Ackley, 2B/OF, Mariners (16.2 Percent Owned)
Don't look now, but the No. 2 pick in 2009 may be figuring things out a bit (emphasis on "may"), as he batted .390/.420/.597 with 10 extra-base hits in August.
Jordan Schafer OF, Braves (1.0 Percent Owned)
With B.J. Upton still stuck in a season-long funk, Schafer has been getting extra PT in the A-T-L, which has translated to some solid SB numbers (eight in August).
Taijuan Walker, RHP, Mariners (16.2 Percent Owned)
Dayan This 21-year-old is arguably the top pitching prospect in baseball, and he looked mighty fine in his big league debut on Friday with five innings of two-hit, one-run ball against the Astros
Billy Hamilton, SS/OF, Reds (7.5 Percent Owned)
Hamilton and his ludicrous speed got the call once rosters expanded, and while his role is somewhat unknown and certain to be limited, he's also capable of stealing 10 bases by lacing up his cleats.
Nick Castellanos, 3B/OF, Tigers (0.1 Percent Owned)
The Tigers are giving their top prospect a shot in September to see if he can either help in October or will be ready for the 2014 Opening Day roster. If he plays, he should hit enough to matter in deeper formats.