Phil Mickelson’s P.G.A. Numbers: 50 Years and One More Day

Mickelson has a one-shot lead over Brooks Koepka entering the final round of the P.G.A. Championship, where he is bidding to become the oldest man to win a major.

KIAWAH ISLAND, S.C. — Mindful of keeping his focus as he ages, Phil Mickelson has begun meditating in his spare time. In the third round of the P.G.A. Championship on Saturday, he clearly took his new diversion to the workplace, pausing for long contemplative moments, occasionally with eyes closed, as he prepared to execute a shot. For 11 holes on Saturday, the result was a commanding, five-shot lead. But Mickelson’s composed walk around the treacherous Ocean Course at Kiawah Island would turn into roughly an hour of chaos, when it seemed he was on the verge of playing his way out of the tournament.