Brooks Koepka, Cut at Augusta Last Year, Seizes Masters Lead

Brooks Koepka tees off on the 17th hole during the second round of the Masters on Friday.AUGUSTA, Ga. — After the Friday round of last year’s Masters Tournament, Brooks Koepka stormed to a Mercedes-Benz parked at Augusta National Golf Club. He was in a fury, a four-time major tournament champion with a beat-up body, a war chest of pent-up ambition and another missed cut.

He tried twice with his fist to break the back window, which did not so much as crack, a pair of low moments in a year so overrun with them that one of the finest golfers of his generation found himself wondering whether he should play on.

“If I wasn’t going to be able to move the way I wanted to, I didn’t want to play the…