Fan Friday: #NewGen stars Michael Mmoh, Francis Tiafoe & Alex Rybakov have new fans coming from left and right. @michaelmmoh - "ahh big M killing it out there❤️" @bigfoe1998 - "Go big foe" @alexry_ "Rybooooo" And that's just a taste of what's in their #Instagram. Who is on your radar? #USTA _ #MichaelMmoh #Tiafoe #Tennis #Trio #Running #NationalCampus