It's not quite Hamlet, but the ghost of Mark Prior can be a significant force in managerial decision-making

...Texas on Thursday, April 9, 2009. The Rangers defeated the Indians 12-8. WASHINGTON - JULY 21: Mark Prior #22 of the Chicago Cubs pitches during a baseball game against the Washington Nationals on July...

CHICAGO - OCTOBER 14: Starting pitcher Mark Prior #22 of the Chicago Cubs throws against the Florida Marlins during Game 6 of the National...

CHICAGO - OCTOBER 8: Mark Prior #22 of the Chicago Cubs throws against the Florida Marlins during game two of the National...

PEORIA,AZ - FEBRUARY 22: Mark Prior #22 of the San Diego Padres poses for a portrait during spring training on February 22...

Fantasy pitchers are an enigma. Mark Prior is no exception

...Sheesh, I hope I don't become like Mark Prior

San Diego Padres' Mark Prior flips a ball to first during a drill at baseball spring training Wednesday, Feb. 27, 2008...

Pitcher Mark Prior #22 of the Chicago Cubs pitches during a play against the Seattle Mariners during Spring Training...

Pitcher Mark Prior #22 of the Chicago Cubs throws a pitch during the game with the Seattle Mariners during...

Pitcher Mark Prior #22 of the Chicago Cubs pitches during a play against the Seattle Mariners during Spring Training...

Chicago Cubs starting pitcher Mark Prior directs teammates to a pop fly from Seattle Mariners' Ben Broussard in the second inning at...

There's still time for Mark Prior, 26, to realize his full ace potential

Mark Prior

Baker has had Mark Prior and Kerry Wood for a total of 13 games