Jarrod Saltalamacchia has already hit 15 home runs in 2012. That's one less than in all of 2011.
Jed Lowrie, meanwhile, has finally found his health and apparently his stroke, too, since moving to the Astros during the offseason. Lowrie has 14 home runs, a career high, and 33 RBIs during the first half of 2012.
Both players have been pleasant surprises for fantasy baseball owners and have had an unbelievable impact for some.
NESN's Julie Wetherbee takes a look at some of the other unknowns who have turned into fantasy studs so far this season.
Check out the video above for more fantasy news and analysis.