Brooks Koepka won the 100th annual PGA Championship today his second major of the 2018 after his back-to-back U.S. Open titles. What was most impressive about Koepka this afternoon who finished with a 66 today to total out at 16-under was his ability to keep cool with Adam Scott and Tiger Woods nipping at his heals. Koepka hit two birdies on the back nine Sunday to help seal the victory with a 4-under 66 and two-shot victory. The 28-year-old also joins Jordan Spieth, Tiger Woods, Jack Nicklaus and Tom Watson as the only players with three major victories before hitting their 30th birthday.