Mustapha faced a fine after the game, receiving $6,998 for unnecessary roughness for a hit on a defenseless receiver that officials did not flag during the game. The league later reviewed the play and classified it as a hit on a defenseless receiver.
Mustapha responded to the fine with a brief message on social media, posting a single word: “Soft.” The post circulated widely, resonating with many 49ers fans who shared the sentiment about the hit.
The crucial play occurred on Seattle’s final offensive drive, with the Seahawks trailing by three and 1:13 remaining. After a 35-yard completion to Jaxon Smith-Njigba moved the ball to midfield, quarterback Sam Darnold targeted the same receiver. Mustapha delivered a strong hit that jarred the ball loose and forced an incomplete pass. The hit was not initially flagged, but Seattle’s final attempt ended with a turnover on downs.
In the aftermath, the 49ers were credited with winning the nail-biter, aided by Mustapha’s hit on a defenseless receiver. The team next plays the Washington Commanders on Monday night.