Steelers' Jaylen Warren faces hefty fine for illegal hit despite referees failing to throw flag on the play

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Pittsburgh Steelers running back Jaylen Warren's wallet might get a little lighter.

The NFL handed down a $48,333 fine for Warren's "illegal use of helmet" in Monday's win over the Cleveland Browns, according to the league's gameday accountability weekly update.

Warren appeared to lower his helmet and make contact with Browns defensive back Juan Thornhill at the end of a catch-and-run reception in the second quarter, but referees did not throw a flag on the play.

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Jaylen Warren (30) of the Pittsburgh Steelers carries the ball against the Cleveland Browns during the third quarter at Acrisure Stadium Sept. 18, 2023, in Pittsburgh. (Justin K. Aller/Getty Images)

According to a social media post from Warren's agent, David Canter, the second-year running back plans to appeal the fine.

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Warren has shown his receiving ability this season, hauling in nine passes for 78 yards. On the ground, the running back has rushed for 26 yards on nine carries. 

Warren is coming off a 2022 season in which he rushed for 379 yards in 16 games. Former Alabama standout Najee Harris remains the top ball carrier on the depth chart.

Jaylen Warren of the Pittsburgh Steelers interacts with fans at Acrisure Stadium Sept. 18, 2023, in Pittsburgh. (Cooper Neill/Getty Images)

Minkah Fitzpatrick, who delivered the hit that resulted in a season-ending knee injury to star running back Nick Chubb, was not fined.

Multiple other Steelers players did, however, receive notable fines following Monday's game. Linebackers