Federer breezes into semi-finals Roger Federer reached the last four of the Qatar Open with an easy 6-1 6-2 win over seventh seed Feliciano Lopez. The Swiss world number one reeled off a series winners to outclass the Spaniard and set up a semi-final match against Russian Nikolay Davydenko. Federer, who lost in the quarter-final in his last Qatar appearance in 2003, was happy with his form. "I think I played better than against Greg Rusedski and I am happy I am playing so well," said the top seed. Lopez showed glimpses of resolve early in the second set when he held his first service game and came close to breaking Federer. But the Swiss saved a break point and promptly broke serve in the following game to seize control. Davydenko, meanwhile, upset French third seed Sebastien Grosjean 2-6 6-3 6-2. Fabrice Santoro completed a miserable day for France when he was forced to retire when 6-2 3-0 down to Albert Costa. Spaniard Costa will next face Croatian Ivan Ljubicic after the sixth seed beat Rafael Nadal 6-2 6-7 (3/7) 6-3.