Pittsburgh Steelers linebacker T.J. Watt was fined $20,054 for a hit on Atlanta Falcons quarterback Matt Ryan on Sunday, a source told ESPN's Adam Schefter.
The league fined Watt -- the league's co-leader in sacks -- for "forcibly hitting in the knee area or below" in the Steelers' 41-17 win over the Falcons on Sunday.
Watt was called for roughing the passer on the play, which came in the second quarter. He said after the game that he was surprised by the call.
"I understand the rules. I'm not a dirty player," Watt said.