The rumor propagated by former Nuggets coach George Karl that Tim Duncan has made up his mind to retire at season’s end was shot down by the Spurs captain after he helped the Spurs score a 113-103 win over the Clippers at Staples Center on Tuesday night.

Citing “whispers” and phone calls, including from San Antonio, about Duncan’s plans, Karl told ESPN on Tuesday he had heard of Duncan’s plan to exercise his player option to walk away from the final season of his three-year deal with the Spurs and retire after this season.