Collin Morikawa Wins PGA Championship and What Happened to Brooks Koepka?

SI's Michael Rosenberg shares his thoughts on Morikawa's big win and what happened to Brooks Koepka this tournament

It was a crowded leaderboard in the final day of the PGA Championship, but a pitch in birdie on 14 gave Collin Morikawa a lead he would hold on to down the stretch, finishing 13 under with a final round 64 and his first major championship win. At 23 years old, he becomes the youngest player to break 65 in the final round of a major victory ever, and joins Rory McIlroy, Tiger Woods and Jack Nicklaus as the youngest winners of the PGA Championship, all at 23.

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