49ers defensive back K'Waun Williams nearly made the play of the year on Monday in San Francisco's win over the Rams.
Williams batted the football in the air as he defended a Cooper Kupp slant route in the fourth quarter, creating a turnover opportunity for the 49ers' defense. Williams fell to the ground after deflecting the pass, but he flung his left hand in the air before securing the ball against his backside for what appeared to be an interception. But the butt-INT was not to be.
San Francisco's defensive back was flagged for pass interference on the play, a sensible call upon replay review.