Báez avoided a suspension.
Báez hit a walk-off single vs. Garrett in the ninth inning Monday, yelling at the Reds lefty as he walked up the first base line. He rocked his bat back and forth in a sweeping motion, later gesturing for Garrett to leave the field.
The Cubs shortstop has been out of the starting lineup each game against the Reds this week due to a bruised left heel.
Báez and Garrett have shared several heated moments in recent seasons, two of which have led to bench-clearing incidents, including in May 2021.
Garrett struck out Anthony Rizzo, directing a celebration at Rizzo and drawing the ire of Báez, who hopped the Cubs' dugout rail.
Garrett was fined and served a five-game suspension after that incident, while Báez was fined.