Daniil Medvedev of Russia celebrates with the championship trophy after his match against Novak Djokovic of Serbia (not pictured) in the men's singles final on day fourteen of the 2021 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center, September 12, 2021. The Russian won the year's final major 6-4 6-4 6-4, though the straight-sets victory was anything but routine as Medvedev had to grit his teeth and battle through cramp to close out the match, keeping the pain hidden to avoid giving Djokovic the scent of blood. Mandatory Credit: Danielle Parhizkaran-USA TODAY Sports

Daniil Medvedev of Russia celebrates with the championship trophy after his match against Novak Djokovic of Serbia (not pictured) in the men's singles final on day fourteen of the 2021 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center, September 12, 2021. Mandatory Credit: Danielle Parhizkaran-USA TODAY Sports

Daniil Medvedev of Russia kisses the championship trophy after his match against Novak Djokovic of Serbia (not pictured) in the men's singles final on day fourteen of the 2021 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center, September 12, 2021. Mandatory Credit: Danielle Parhizkaran-USA TODAY Sports

Daniil Medvedev of Russia celebrates with the championship trophy after his match against Novak Djokovic of Serbia (not pictured) in the men's singles final on day fourteen of the 2021 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center, September 12, 2021. Mandatory Credit: Danielle Parhizkaran-USA TODAY Sports

(L-R) Novak Djokovic of Serbia and Daniil Medvedev of Russia celebrate with the finalist and championship trophies, respectively, after their match in the men's singles final on day fourteen of the 2021 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center, September 12, 2021. Mandatory Credit: Danielle Parhizkaran-USA TODAY Sports

Daniil Medvedev of Russia celebrates after his match against Novak Djokovic of Serbia (not pictured) in the men's singles final on day fourteen of the 2021 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center, September 12, 2021. Mandatory Credit: Danielle Parhizkaran-USA TODAY Sports