Roger Federer has crashed out of the Cincinnati Masters.
The seven time winner suffered a shock straights sets defeat to 21-year-old Russian qualifier Andrey Rublev.
The third round win means Rublev will now face compatriot Daniil Medvedev in the quarter-finals.
Meanwhile world number one Novak Djokovic is through to the final eight after an easy win over Pablo Carreño Busta.

Budimir gives Croatia win to eliminate Panama in Group L
England fail to break down Ghana in goalless draw
Ronaldo guides Portugal to big win over Uzbekistan
US eases restrictions on Iran's world cup team
Pant returns to Delhi in IPL swap with Kuldeep
