Twenty 2020 Questions: Will the Next Gen build off a promising 2019?

We're answering the 10 biggest questions on the WTA and ATP tours in 2020. The entire list will be rolled out here.

Lift the age restriction with this group to 23, and men’s tennis is in good hands. Daniil Medvedev (23), Matteo Berrettini (23) and ATP Finals champ Stefanos Tsitsipas (21) will all look to build upon breakthroughs. With targets on their backs, each must schedule soundly to avoid burnout.

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Alex de Minaur (20) will try and outwork everyone in the off-season. Denis Shapovalov (20) and Felix Auger-Aliassime (19) will both be raring to make deep major runs, like their North American counterparts, Taylor Fritz (21) and Reilly Opelka (22). If Andrey Rublev (22) can stay healthy, his star is as bright as anyone’s, along with the ATP's Newcomer of the Year Jannik Sinner (18). And don’t forget the “old guys,” Karen Khachanov (23) and Borna Coric (23), two players motivated to bounce back from dry spells.