Pre-Focus for Sport Photography

Pre-focus, if you know the game. Example, the sport of snowboarding, you know roughly where the athletes will land. You just need to shoot at the point. Find the focus. Then turn off the automatic focus function. You can just watch the game and wait for the athlete to the point. You can instantly take a picture, when the athletes reach that point. No need to wait for autofocus looking for the focus.

Don't wait auto focus looking for the focus, or you'll loose the moment. Happy photo hunting.