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Osama Faisal, Associated Press
Flavio Cipolla of Italy returns the ball to Jo-Wilfried Tsonga of France during the Qatar ATP Open Tennis tournament in Doha, Qatar, on Wednesday Jan. 4, 2012

DOHA, Qatar — Rafael Nadal moved into the quarterfinals of the Qatar Open by defeating German qualifier Denis Gremelmayr 6-2, 6-2.

With the victory, the second-ranked Nadal extended his streak of beating players outside the top 100 to 45.

Jo-Wilfried Tsonga also advanced, saving two set points in the first set before beating Flavio Cipolla of Italy 7-6 (8), 6-3.

Also, sixth-seeded Alex Bogomolov Jr. of Russia withdrew from the tournament with a right ankle injury, becoming the first seeded player not to advance.