Rome:Rafael Nadal's 74th consecutive win on clay saw the defending champion through to the last eight of the Rome Masters on Thursday.
The 20-year-old Spaniard beat Mikhail Youzhny 6-2, 6-2.
Second-seeded Nadal will meet Novak Djokovic in the quarterfinals after the Serbian number five seed put out Marcos Baghdatis of Cyprus 6-2, 7-5.
In other matches, twelfth seed Tomas Berdych of the Czech Republic beat Argentina's Jose Acasuso 6-1, 6-2.
Nikolay Davydenko of Russia, the number four seed, beat Italian wild card Potito Starace in three sets and Spain's Tommy Robredo, seeded seven, defeated Gilles Simon of France, 6-2, 6-2.