Fourth seed Nikolay Davydenko overcame an early fright to beat France's Florent Serra 6-7, 6-4, 6-1 on Tuesday in an error-strewn first-round battle at the Dubai Championships.
Swedish top seed Robin Soderling survived his first real test at the Stockholm Open on Friday, beating Spaniard Guillermo Garcia-Lopez in the quarter-finals 7-6 6-4.
World number one Rafael Nadal will begin the defence of his title at Wimbledon against Frenchman Arnaud Clement as long as his painful knees hold up. French Open champion Federer, in pursuit of a record 15th Grand Slam title, will open his account against Taiwan's Lu Yen-hsun.
The Australian Open champion beat Frenchman Arnaud Clement 6-3, 6-3, 6-4 in his opening match at the US Open.
The American scored his maiden win over Arnaud Clement to advance to the quarter-finals of the Kroger St Jude championships.
Experienced Frenchman Arnaud Clement and British teenager Andy Murray roared into the Legg Mason Classic final with straight-sets victories.
Russia's Mikhail Youzhny kept alive slim hopes of qualifying for the Masters Cup by downing Frenchman Arnaud Clement 6-4 6-3 in the opening round of the Paris Masters on Monday.
Sania advanced to the second round with a 6-3 6-3 win over Spaniard Anabel Medina Garrigues.
Rafael Nadal fired down 10 aces en route to a 6-3, 7-6 win over Arnaud Clement in the Pacific Life Open second round.
Arnaud Clement beat British teenager Andy Murray 7-6, 6-2 to win the Legg Mason Classic.