ST. LOUIS — A look at the key hole Sunday in the closing round of the PGA Championship:
STROKE AVERAGE: 3.125.
KEY FACT: About 30 minutes after Tiger Woods missed a 20-foot putt that would’ve tied him for the lead, Brooks Koepka hit a 4-iron to 6 feet to set up a birdie that gave him a two-shot cushion going into the homestretch.
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