Tiger Woods is Sitting Out the British Open.

(AP)-He's still having an impact on players such as Jason Day.

The world's top-ranked golfer says he learned plenty of lessons on mental toughness and course management from Woods, a three-time Open champion who is notably absent from Royal Troon.

Woods is recovering from back surgery and has yet to play in a tournament this year.

According to Day, Woods could usually find a way to stay in contention even when he didn't have his best stuff, and no one was better at pulling away when he was striking the ball well.

Day says he tries to incorporate some of those lessons into his own game.