"Neris got the save and looked right into our dugout and screamed as loud as he could, 'F--- you!'" Dodgers first baseman Max Muncy told reporters after the game.
The Dodgers stayed in the dugout, watching Neris. On the broadcast, it appeared that catcher Russell Martin shouted to the pitcher that they meet somewhere.
"I think we played this series the right way, played it straight," Dodgers manager Dave Roberts said. "To look in our dugout and to taunt in any way, I think it's unacceptable. Look in your own dugout."
Neris is facing a three-game suspension for throwing at Dodgers first baseman David Freese on Tuesday after giving up a three-run homer. He is playing until his appeal is heard.
He told reporters that Thursday's celebration was "just emotions."
"It's a great win for my team and just I let my emotion get out," Neris said.
Muncy thought there was more to it than that.
"He's blown about eight saves against us over the last two years," Muncy said. "I guess he was finally excited he got one. Whatever."
Neris has a loss and a blown save in three appearances against the Dodgers this year. He has allowed three home runs, four hits, one walk and has struck out two batters. Last season, in one appearance, he allowed three hits and a run in a third of an inning against the Dodgers.