Hall of Famer shares wife Bridgette Wilson-Sampras, 50, is battling ovarian cancer.
The 2023 Australian Open champion had her best season and doesn't want to stop now.
"You cannot play good tennis when it's that windy out there," says Maria Sakkari ahead of the WTA Finals in Cancun.
The 24-time major champion had high praise for both Rune and Becker, and believes their pairing will be productive.
Iga Swiatek and Coco Gauff are in the same group, as are Elena Rybakina and Aryna Sabalenka.
The former Wimbledon finalist announced the news on Instagram.
Novak Djokovic and Carlos Alcaraz will rejoin the fold at next week's Paris Masters - have a look at the draw below.
