Alexander Zverev, former world No. 2, now 27th, continued his renaissance at Roland Garros by qualifying for the quarterfinals at the expense of Bulgarian Grigor Dimitrov (29th) The 26-year-old German will face Argentina's Tomas Martin Etcheverry (49th), who fell 7-6 (10/8), 6-0, 6-1 to Yoshihito Nishioka (33rd) At 23, Etchevry will play him his first ever Grand Slam quarterfinal.