> Raonic, Nishikori, Tomic, Kyrgios and Dimitrov. They were as a group supposed to be dominating tennis by 2015 already and...
nothing. Combined 0 slams, 0 MS-1000, 0 weeks at #1, 0 YEC wins. Pathetic.
It will be up to born 97-01(Zverev, Shap, auger-aliassime, ruud) to take over around 2018-2019.
No one is going to take over the top four until the top four are physically old, retired or on disability.