With the contest tied, Timmy came off of a pin-down screen and caught the ball at the right elbow. As he faded to his left, he released a smooth 17-footer that didn't even graze the rim as it swished through.
The Hawks couldn't answer in the four-tenths of a second that remained.
It was a perfect ending to a huge effort for Duncan. With 23 points and 21 rebounds, Timmy became the oldest player to register a 20-20 game in NBA history, per Elias Sports Bureau (via ESPN).