Hall of Fame
This USO was crucial for Rafa in his quest to overtake Federer. Now the difference between them remains 3 GS, the same since 2014. I know Rafa can still win a couple more RGs(at max) and maybe eke out a USO going ahead, but I don't see him catch Federer, here on. The field is getting tougher and he's getting older. I don't put it past him though, but this USO was crucial.