No. 1 Roger Federer and No. 2 Lleyton Hewitt won in straight sets Tuesday to advance in the Pacific Life Open. Federer, winning for the 22nd time in 23 matches this year, defeated Gilles Muller 6-3, 6-2 to move into the fourth round. Hewitt had a slightly more difficult time, beating Michael Llodra 6-2, 7-6 (3).