Analysis: Medvedev, Thiem get tennis set for intriguing 2021

No one thinks it’s time to write off Novak Djokovic or Rafael Nadal — or even Roger Federer — just yet. Well, they shouldn’t, anyway. Still, the season-ending ATP Finals set the stage for an intriguing 2021 in men’s tennis with the emergence of Daniil Medvedev and the continued excellence of Dominic Thiem, a pair of 20-somethings who look ready to continue their climbs to the sport’s apex. They’re part of a group of up-and-coming men that also includes S