The world tennis number one Roger Federer and title-holder Andy Murray have both made confident starts to the Cincinnati Masters on Wednesday with straight-sets wins in the second round.
Federer beat Jose Acasuso of Argentina while British world number two Murray overcame Nicolas Almagro of Spain.
The fourth seed Novak Djokovic also reached the third round with a straight sets win over Croatian Ivan Ljubicic, but the seventh seed Jo-Wilfried Tsonga of France was upset 7-6 6-2 by Australian qualifier Chris Guccione.
If the seedings fall into place Federer and Murray will meet in the semi-finals and both players look in good nick.
Federer will play Spaniard David Ferrer for a place in the quarter-finals while Murray will play the Czech Radek Stepanek.