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Cincinnati Reds' Todd Frazier hits a two-run home run off Toronto Blue Jays starting pitcher R.A. Dickey in the fifth inning of a baseball game on Sunday, June 22, 2014, in Cincinnati. (AP Photo/Al Behrman)

Fantasy baseball stock watch - Week 13

Special to Yahoo Sports

Maintaining your fantasy baseball roster can be a daunting task with all of the variables to keep track. Thank goodness for this weekly Yahoo Sports cheat sheet of players to keep and players to drop. Find out whose stock is going up and whose stock is plummeting this week.