He defeated Jo Wilfred Tsonga in straight sets and could now face Roger Federer for a place in the final.
The former world number one takes on Mischa Zverev in his quarter-final later this morning.
Earlier Venus Williams qualified for the women's semi-finals for the first time in 14 years.
She defeated Anastasia Pavlyuchenkova in straight sets overnight to book her place in the last four.
