Top 10 fantasy baseball prospects

When you go to watch minor league teams take batting practice, it can be somewhat to extremely difficult to identify players. They are often wearing uniforms without numbers, so you are often forced to hypothesize based on the player's height and build and the side of the plate he's batting from.

At 6-foot-5, 275 pounds, that is not the case for new Minnesota Twins first baseman Kennys Vargas, who received a call-up on Thursday after Minnesota traded away Sam Fuld to the Oakland Athletics for starting pitcher Tommy Milone.

Vargas, out of Puerto Rico, was signed at age 19 in the winter of 2009, and the Twins took things slowly with him; the switch-hitting first baseman played in short-season leagues before he made his full-season debut in 2012. He's hit for average and power at every level, and he ranked among the leaders in the Eastern League in homers, runs batted in and total bases before his promotion to the Twins.