Medvedev makes winning start; Nadal sails through

IMAGE: Serbia's Novak Djokovic celebrates winning his second round match against Russia's Karen Khachanov. Photograph: Suhaib Salem/Reuters World number one Novak Djokovic impressed again at......

WTA Finals PIX: Badosa moves into semis, Sabalenka survives

IMAGE:  Paula Badosa of Spain celebrates after winning the match against Maria Sakkari of Greece during 2021 Akron WTA Finals. Photograph: Hector Vivas/Getty Images for WTA Spain's......

WTA Finals PIX: Pliskova, Kontaveit open with wins

IMAGE: Karolina Pliskova of Czech Republic celebrates in her singles match against Garbiñe Muguruza of Spain during Day 1 of 2021 Akron WTA Finals. Photograph: Matthew......