He is attempting to reach his first quarter - final here .
Wawrinka is trying to reach the quarter - finals here for the third straight year while Dimitrov is appearing in the 3R for the third time in four years .
Wawrinka is attempting to reach Wawrinka 's first quarter - final here .
Wawrinka is trying to reach the quarter - finals here for the third straight year while Dimitrov is appearing in the 3R for the third time in four years .