Tuesday's contest between the San Francisco Giants and the San Diego Padres proved to be a historic one for the MLB, as Giants assistant coach Alyssa Nakken became the first woman to coach on the field in a regular season game. Nakken entered the game after San Francisco first base coach Antoan Richardson was ejected in the third inning. As it turns out, something very noteworthy occurred before Richardson's ejection. The Giants coach accused Padres coach and former St. Louis Cardinals manager Mike Shildt of yelling at him with racist undertones, per ABC News.

“[Shildt] yelled ‘You need to control that mother—er,'” Richardson told reporters. “At that point in time, I went to the top step and said, ‘Excuse me,' because I couldn't believe what I heard. At that point in time, Gibson the crew chief decided to toss me from the game.

“I say this because his words were disproportionately unwarranted and reeked undertones of racism when he referred to me as ‘that mother—er,' as if I was to be controlled or a piece of property or enslaved. I think it's just really important we understand what happened tonight.

After the game, Richardson told reporters that Shildt yelled “You need to control that mother******.” The Giants coach couldn't believe what he was hearing from the Padres dugout.

To Richardson, it sounded like Shildt was speaking to him as if he was “to be controlled” or “a piece of property.” Those are certainly serious accusations from the Giants coach, who reportedly had words with the Padres third-base coach.

Given all that has occurred between these division-rivals, Wednesday's series finale figures to be a tense one.