Video footage released to the media appeared to show Stonestreet arguing with a St Louis Cardinals fan at the game, before security arrived to escort the actor away.
It was initially reported that Stonestreet and the other man were both asked to leave by security following their altercation.
Stonestreet has since taken to Twitter to clarify that he was not actually ejected from Dodger Stadium.
"i did NOT get kicked out of the Dodgers game last night. did i get escorted to the top of the stairs by security? yes. yes i sure did," he wrote.
He went on to joke that the incident has led him to reevaluate his diet.
"I didn't know it until I just looked at my @ replies, but apparently I'm quite overweight," he quipped.
Stonestreet notably won a Primetime Emmy Award in 2010 for his portrayal of Cameron Tucker on Modern Family.
Modern Family premieres its new season Wednesday, September 26 at 9/8c on ABC.
Watch a trailer for the show's new season below: