In the video, Stanton is seen trying to duck out of the 88 mph pitch's path before being hit and falling to the ground. Trainers from both team responded immediately.
The pitcher was Brewers starter Mike Fiers.
Reed Johnson bat for Stanton after the game resumed and was hit by Fiers' next pitch. That play cleared the benches and resulted in ejections of Marlins' Casey McGehee and manager Redmond.
In the sixth inning, Miami reliever Anthony Desclafani struck Carlos Gomez with a pitch and was ejected by the home plate umpire. Marlins bench coach Rob Leary was also ejected.
The Brewers won the game.
Stanton exited as the Major League RBI leader with 105 on the year as well as the NL's home run leader with 37. He was considered one of the favorites to win the NL MVP award.
The Associated Press contributed to this report.