Roger Federer felt good about his 6-3, 6-4 win over Marcel Granollers, and will play Nikolay Davydenko in the quarter-finals. Jumana El Heloueh / Reuters
Roger Federer felt good about his 6-3, 6-4 win over Marcel Granollers, and will play Nikolay Davydenko in the quarter-finals. Jumana El Heloueh / Reuters

Dubai Tennis Championships: Federer and Djokovic enter quarter-finals