Joba Chamberlain thoroughly enjoyed what Cam Schlittler did both on and off the mound on Thursday night ... telling TMZ Sports he loved the way the Yankees pitcher trolled fans after mowing down the Red Sox lineup.
If you missed it, just after Schlittler twirled an eight-inning, 12-strikeout gem against Boston in a Wild Card series do-or-die victory, he took to X to talk some smack.
First, he jabbed at a stunning Boston supporter ... before he bragged about "drinking dat dirty water."
On Friday, Joba told us he was a big fan of Schlittler's gloating .