Who Knows Their 90s? Nov 13, 2017 With the 2017 Nitto ATP Finals celebrating the heritage of the 1990's, we tested the players on their 90's knowledge. But who knows the Backstreet Boys' songs better: Dimitrov or Federer? Tags: 2017 Grigor Dimitrov Nitto ATP Finals Off Court News Share 0 Share on Facebook Tweet Tweet on Twitter +1 +1 on Google Plus