Fantasy baseball stock watch - Week 4

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.

Houston Astros v Oakland Athletics

OAKLAND, CA - APRIL 20: George Springer #4 of the Houston Astros dives and takes a hit away from Coco Crisp #4 of the Oakland Athletics (not pictured) in the bottom of the first inning at O.co Coliseum on April 20, 2014 in Oakland, California. (Photo by Thearon W. Henderson/Getty Images)

New York Yankees v Toronto Blue Jays

TORONTO, CANADA - APRIL 6: David Robertson #30 of the New York Yankees is congratulated by Ivan Nova #47 during MLB game action against the Toronto Blue Jays on April 6, 2014 at Rogers Centre in Toronto, Ontario, Canada. (Photo by Tom Szczerbowski/Getty Images)

Colorado Rockies v San Diego Padres

SAN DIEGO, CA - APRIL 14: Michael Cuddyer #3 of the Colorado Rockies, right, leaves the game with a trainer after falling trying to make a catch on a triple hit by Alexi Amarista #5 of the San Diego Padres during the fifth inning of a baseball game at Petco Park April 14, 2014 in San Diego, California. (Photo by Denis Poroy/Getty Images)

St Louis Cardinals v Pittsburgh Pirates

PITTSBURGH, PA - APRIL 06: Jason Grilli #39 of the Pittsburgh Pirates pitches in the ninth inning against the St. Louis Cardinals during the game at PNC Park April 6, 2014 in Pittsburgh, Pennsylvania. The Pirates defeated the Cardinals 2-1. (Photo by Justin K. Aller/Getty Images)

St. Louis Cardinals v New York Mets

NEW YORK, NY - APRIL 22: Curtis Granderson #3 of the New York Mets sits in the dugout during the second inning against the St. Louis Cardinals at Citi Field on April 22, 2014 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Jim McIsaac/Getty Images)

Boston Red Sox v Chicago White Sox

CHICAGO, IL - APRIL 16: Daniel Nava #29 of the Boston Red Sox reacts after striking out in the 4th inning against the Chicago White Sox at U.S. Cellular Field on April 16, 2014 in Chicago, Illinois. (Photo by Jonathan Daniel/Getty Images)