When Carlos Alcaraz is on court for a training session, perhaps working on his newly revamped service motion, he's doing so to buttress a game already good enough to claim four Grand Slam titles.

The men's world No. 1 could face a two-year ban. Here's what to know about the doping proceedings against him so far

Four-times Grand Slam champion Carlos Alcaraz said having a rival like world number one Jannik Sinner was good for his game as it pushes him to be at his best every time he walks on court. Alcaraz won the French Open and Wimbledon titles last year while Sinner claimed the Australian Open and U.

Former world number one Daniil Medvedev hopes to once again become a tennis "disruptor" by breaking the Grand Slam duopoly of young guns Jannik Sinner and Carlos Alcaraz. Medvedev was knocked out of three Grand Slams last year by the duo,

USA TODAY photographer captures wildfire devastation from a helicopter in Malibu Carlos Alcaraz discusses ‘great rivalry’ with Jannik Sinner prior to Australian Open The Reason Train Design Changed After 1948.