 On November 15 , 2013 , Whiteside signed a minor league contract with the Chicago Cubs , with an invitation to spring training . He competed with John Baker and George <unk> for the backup catcher role , and was assigned to the Triple @-@ A Iowa Cubs of the Pacific Coast League on March 27 when Baker was given the role . His contract was selected from Iowa on June 3 when <unk> Castillo was placed on the disabled list . Whiteside appeared in eight games , batting <unk> . He was designated for assignment on June 22 when Castillo returned from the disabled list , and sent outright to the Iowa Cubs on June 25 . Whiteside elected free agency in October 2014 . 
