The Americans defeated the International Team, 19-15, to win their fourth straight Presidents Cup.
Woods took down Aaron Baddeley in a singles match to solidify the win. After Woods and his partner, Steve Stricker, were blown out by Adam Scott and K.J. Choi, Woods got back up and proved he belonged on the team.
Couples never doubted Woods' preparation going into the competition.
"He was ready for a month," Couples said. "Certainly, I couldn't answer how he was going to play, but this week I think he showed to himself that his swing is back and he's healthy, and that's more important to me. Obviously, we want to win the cup, but it's more important for me to have people realize that he can play the game."
Adding another exclamation point to the victory was Jim Furyk's perfect Cup, as he won all five matches that he played.
"I felt better about my game than what I've been playing this year, and I kind of want to thank my partners," said Furyk, who won three matches with Phil Mickelson and another with Nick Watney.