BARCELONA, Spain -- Rafael Nadal extended his winning streak on clay to 69 matches, defeating Thomas Johansson 6-1, 6-4 on Thursday to advance to the quarterfinals of the Open Seat Godo.
The two-time defending champion was nearly perfect on his first serve, hitting 26 winners while dropping only five points on serve.
"I've got a difficult match in the quarterfinals to get into the semifinals, but if I get to the semifinals, I will already feel relaxed because whatever happens I haven't had a bad tournament," Nadal said. "I like to think that if I play to my usual standard I shouldn't lose, but anything can happen on any day."
Nadal will next play Potito Starace of Italy, who beat eighth-seeded Juan Ignacio Chela of Argentina 6-4, 7-6 (10). Starace saved five set points before forcing the second-set
Nikolay Davydenko rallied in both sets to overcome Filippo Volandri of Italy 7-6 (5), 7-6 (6).
The second-seeded Russian broke Volandri three times in the second set and will next face 12th-seeded Guillermo Canas of Argentina, who beat Pablo Andujar of Spain 7-5, 6-3.
Fourth-ranked David Nalbandian of Argentina downed 2003 champion Carlos Moya 6-4, 6-3.
Nalbandian will play David Ferrer, who advanced after beating Boris Pashanski of Serbia 6-2, 7-5. The fifth-seeded Spaniard rallied from 4-1 down in the second set.
Ferrer hasn't lost to Nalbandian on clay in three meetings.
Augustin Calleri of Argentina will face Oscar Hernandez of Spain after upsetting 2004 champion Tommy Robredo 6-4, 2-6, 6-3. Hernandez beat sixth-seeded Jarkko Nieminen of Finland 6-1, 6-7 (6), 6-3.