Marcus Williams has vowed not to let one play define his career in the wake of the stunning end to Sunday's playoff game between the New Orleans Saints and Minnesota Vikings.

The rookie safety missed a tackle, allowing Stefon Diggs to score on a historic 61-yard, walk-off touchdown catch.

Williams was hard on himself after the defeat and has been ridiculed on social media. He vowed "to never let that happen again. And, I mean, if it happens again, then I shouldn't be playing."