Jannik Sinner's tennis career could have been very different, with the Italian revealing he already had a retirement timeline planned had he not been successful

They'll still play the full U.S. Open starting Sunday in New York, but it might save some time to skip ahead to the men's final on Sept. 7.

Jannik Sinner and Carlos Alcaraz are locked in a tennis rivalry that is shaping up to be among the sport's greatest. They've even been dubbed "Sincaraz." Their epic, more-than-five-hour match at the French Open demonstrated this,