NFL gives Falcons' Keith Smith largest fine of the season for a play that was not flagged in-game

Fox News Flash top sports headlines are here. Check out what's clicking on Foxnews.com.

Keith Smith's wallet will soon be significantly lighter. On Friday, the NFL's accountability website revealed that the Atlanta Falcons fullback received a $87,418 fine for unnecessary roughness for a hit from last week's game against the Detroit Lions.

Smith, who is in his fifth season with the Falcons, appeared to lead with his helmet as he blocked Detroit's Zonovan Knight. The Lions running back was knocked to the ground during the play.

The play in question happened during a kick return. Referees did not throw a flag on the play.

CLICK HERE FOR MORE SPORTS COVERAGE ON FOXNEWS.COM

Keith Smith of the Atlanta Falcons walks off the field after the Bengals game at Paul Brown Stadium on Oct. 23, 2022, in Cincinnati, Ohio. (Justin Casterline/Getty Images)

Aside from Smith, Falcons defender Kaden Elliss was also fined for unnecessary roughness. Elliss tacked wide receiver Amon-Ra St. Brown in the third quarter, which resulted in a $16,391 fine.

NFL FINES RAMS' AARON DONALD FOR HITTING SEAHAWKS QB GENO SMITH DURING 'OH MY GOD' MOMENT: REPORT

Similar to Smith's situation, there was no in-game penalty on Elliss' tackle.

Richie Grant and Keith Smith, front from left, of the Atlanta Falcons before the Lions at Ford Field on Sept. 24, 2023, in Detroit. (Rey Del Rio/Getty Images)

The Lions did not make it through the Week 3 game unscathed. Lions defender Alex Anzalone was fined $13,922 for unnecessary roughness for an unflagged hit on rookie running back Bijan Robinson. 

Anzalone hit Robinson on Atlanta's first offensive play.

Keith Smith, center of the Atlanta Falcons walks through the tunnel before the Lions game on Sept. 24, 2023, in