Coric (18), Kokkinakis (19), Chung (18), Zverev (18). And perhaps Rublev (17) on the way?
When did this happen last??
Yeah, he's a year younger than the other guys so he'll have a bit more progression to do. Born same year as Zverev but he's about 6 months younger still. Ymer and Donaldson will most likely be the next ones up.Rublev still has a ways to go, he's currently #229.