Marlins general manager Dan Jennings told SiriusXM's Jim Bowden in an interview Sunday that Giancarlo Stanton is "not available" for trade this offseason.
According to FOX Sports' Ken Rosenthal, the Marlins have reassigned hitting coach John Pierson to the minors.
Giancarlo Stanton scored the winning run in Sunday's 1-0 victory over the Tigers.
Giancarlo Stanton delivered a walkoff single in the 10th inning on Saturday, giving the Marlins a 2-1 come-from-behind victory over the Tigers.
Giancarlo Stanton's three-run double in the third inning on Friday powered the Marlins to a 3-2 victory over the Tigers.
Giancarlo Stanton clubbed a pair of home runs in a loss to the Mets on Friday.
Giancarlo Stanton went 2-for-3 with a home run and three RBI against the Braves on Wednesday.
Giancarlo Stanton (foot, ankle) returned to the Marlins' starting lineup again on Tuesday.
Giancarlo Stanton (foot, ankle) is out of the Marlins' starting lineup again on Monday night.
Giancarlo Stanton (foot/ankle) is not in the Marlins' lineup Sunday.
Giancarlo Stanton left in the eighth inning of Saturday's game with a sore right foot and ankle.
Giancarlo Stanton (ankle) is in the Marlins' starting lineup on Monday afternoon versus the Cubs.
Giancarlo Stanton is dealing with a minor ankle injury.
Giancarlo Stanton hit his 17th home run against the Nationals on Wednesday.