Djokovic through, Federer out

MONTREAL - Top seed Novak Djokovic surged into the quarterfinals of the ATP Montreal Masters on Thursday and was the last of the top players remaining after Roger Federer fell to Jo-Wilfried Tsonga.

Djokovic, the newly crowned world No 1, claimed his 50th win of the season, beating Croatian Marin Cilic 7-5, 6-2, as he closed in on his ninth title for 2011.

Federer lost to Tsonga for the second time this summer, going down 7-6 (3), 4-6, 6-1.