The Modern Family actor is said to have been escorted out of his seat during a Los Angeles Dodgers game, reports TMZ.
He allegedly got into a fight with a rival St Louis Cardinals fan, according to a witness.
The witness stated that Stonestreet had said something to the other fan after he heckled a Dodgers player.
A video has been released by the gossip website showing Stonestreet and the fan exchanging words before security arrive to ask the actor to leave.
The other fan was also instructed to leave by security staff.
Eric Stonestreet recently starred in a trailer for upcoming drama The Loft alongside Karl Urban and Wentworth Miller.
The Modern Family child actors were recently given a pay rise on the comedy by ABC.