Mike Dinovo-USA TODAY Sports

White Sox designated hitter/catcher Yermin Mercedes announced on Instagram tonight that he’s stepping away from baseball “indefinitely.” The 28-year-old thanked his family, agent Daniel Szew, and his former teammates before concluding his post with the words: “it’s over.”

It’s a stunning development for a player whose breakout performance was one of the biggest storylines of the early 2021 season. Mercedes started the season as the White Sox’ designated hitter and went 8-for-8 to begin the year. Mercedes batted .368/.417/.571 through the season’s first 38 games, but he followed that up with a .150/.220/.196 across his next 118 plate appearances.

The White Sox optioned Mercedes to Triple-A Charlotte back on July 2, and he’s been ripping through minor league pitching since that time. In 14 games and 61 plate appearances, he’s batting .309/.377/.655 with four home runs, five doubles and a triple.

Despite Mercedes’ post tonight, the White Sox say they have not received any formal indication from the player himself. The team released the following statement:

“The White Sox are aware of tonight’s Instagram post by Yermín Mercedes, who is currently on the active roster of our Class AAA team in Charlotte. At this point in time, the White Sox have not received any official notification from Yermín concerning his future plans.”

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