Sabalenka’s power is different than Rybakina’s, though. Both players are six feet tall, but Sabalenka swings a tennis racket like a lumberjack wields an ax, screaming with exertion on every stroke, every bit of struggle and emotion visible in her eyes, while Rybakina’s long arms make her seem like a human trebuchet, slinging shots in silence and giving no hint of the turmoil stirring inside.

As Sabalenka settled in and knotted the score, the match became a test of which brand of high-octane tennis could sustain the pressure of a final set for one of the biggest championships in the sport. As the reigning Wimbledon champion playing against a first-time Grand Slam finalist, Rybakina held a priceless edge in experience, but Sabalenka had all of the momentum, and the balls were jumping off her strings with a pop and a zip that Rybakina couldn’t match.

The scoreboard showed them trading service games through the first six games, but Sabalenka was on cruise control and Rybakina had to keep finding big serves or tiny escape hatches to stay even.

Serving in the seventh game Rybakina could no longer do it. On her third chance to get the crucial break of serve, Sabalenka sent her opponent scrambling after shots, then put away the game with an overhead shot from the middle of the court. Two games from the championship and in the driver’s seat, Sabalenka pumped her fist, took a few deep breaths and mouthfuls of water on the changeover, then strutted back onto the court to hammer her way to the title.

An ace into the corner of the service box put her one game from cradling the trophy, which would be hers if she could just avoid wobbling.

On Thursday, after finally making her first Grand Slam final on her fourth try, Sabalenka talked about having fired her sports psychologist. She decided that she was the only one who could find a way to overcome the mental struggles that doomed her in the past.

“Every time hoping that someone will fix my problem, it’s not fixing my problem,” she said. “I just have to take this responsibility, and I just have to deal with that. I’m not working with a psychologist any more. I’m my psychologist.”