Sinner accepted a three-month ban in February following an agreement with the World Anti-Doping Agency, which challenged an independent tribunal's decision to clear him of wrongdoing after two positive tests for the anabolic agent clostebol.
Carlos Alcaraz said Sunday that the pressure to reclaim the world number one ranking from the suspended Jannik Sinner has had a negative impact on his form this season.
Sinner received a three-month ban agreed with the World Anti-Doping Agency (WADA) in February after "admitting "partial responsibility" for team mistakes.
Jannik Sinner accepted on Saturday a three-month ban from tennis after the world number one admitted team mistakes led to him twice testing positive for traces of banned substance clostebol last year.
"He has lost only four or five matches in the past year, so it's crazy. I know people say who's better out of us. They say Jannik is better or some say me. It's all discussion."
Double Australian Open champion Jannik Sinner set his sights on mastering clay and grass courts to make himself a complete player after the Italian claimed his third hardcourt Grand Slam title on Sunday.
The 23-year-old came through a tense battle between the world's top two players 6-3, 7-6 (7/4), 6-3 on Rod Laver Arena, raising his arms in the air and looking to the sky in celebration.
The victory earned the Italian world number one his third Grand Slam crown.
Sinner's coach Darren Cahill said it was no surprise for him to see his young charge back in the final, but they were wary of the threat posed by Zverev's overarching desire to finally win a Slam.
Italy's Jannik Sinner destroyed defending champion Daniil Medvedev 6-1, 6-2 in just 69 minutes on Friday to reach the final of the ATP Miami Open, where he will take on Grigor Dimitrov.
A reset is not something Sinner has had to do this campaign.
The victory ended Sinner's 19-match winning streak, including a 16-0 start to the year, and insures Alcaraz will remain No. 2 in the world rankings next week.
For any other player but Novak Djokovic, a below-par Australian Open at the age of 36 would have had pundits brushing up his tennis obituary. Djokovic, of course, is no ordinary player.
Australian Open champion Jannik Sinner powered to his first Rotterdam Open title on Sunday, breaking down a determined defensive effort from Australia's Alex De Minaur to win 7-5, 6-4 in a high-quality battle.
Patience is a virtue that Sinner does possess, and eventually that paid off.
"I'm the same boy I was before I won the title," he insisted on his return to Rome.
Ever since bursting on the scene as a 17-year-old in 2019, the Italian has been touted as one of tennis' future greats.
Jannik Sinner stormed back from two sets down to beat Daniil Medvedev in a gruelling five-set Australian Open final on Sunday and win his first Grand Slam.
Jannik Sinner has sprinted past opponents at the Australian Open in his quest for a maiden Grand Slam but could end up running a marathon in the final against Daniil Medvedev on Sunday, when Melbourne Park will crown a new king.