You knew this was coming ...
Alex Rodriguez was epically teased over his ex, Jennifer Lopez, getting engaged to Ben Affleck ... with Michael Kay hinting at it during the Yankees vs. Red Sox game -- and the moment is hilarious.
The ex-MLB slugger was chopping it up with his co-host during the "KayRod" broadcast of "Sunday Night Baseball" on ESPN 2 ... when Kay decided to poke some fun.
"It's a great time in sports," Kay said in the 9th inning. "You have a new Masters champion, NBA playoffs are about to start, baseball's in full swing, people getting engaged.