Among Men's Top 100, i think i haven't seen a single match of these guys ever :
Guido Pella, Aljaz Bedene, Kenny De Schepper, Guillaume Rufin, Adrian Ungur, Rogerio Dutra Silva
Have seen matches/highlights of almost every other player in top 100..
Among Women top100, forget it..I couldn't recognize almost half the players in top100
WTA fans : don't hate me