Peter Kostis is a world renown golf instructor. Among his many students are Paul Casey, Chez Reavie, Bernhard Langer, Steve Elkington, Dan Marino, Maury Povich and Mike Schmidt. He has the Peter Kostis Learning Academy at Grayhawk Golf Club in Scottsdale, Arizona. Peter was the instructor who coached Kevin Costner in “Tin Cup” and also appeared in the film as himself. He was famous for his slow-motion breakdowns of Tour players swings as the lead on-course reporter and golf analyst for CBS from 1992 through 2019.