Home favourite Andy Roddick's involvement at the ATP tournament in Memphis was ended in straight sets by Xavier Malisse of Belgium.

Veteran Roddick, the defending champion and second seed, fell to a 7-6(8) 7-5 defeat to leave fans at the event in Tennessee disappointed.

It was Roddick's earliest exit from Memphis in 12 appearances at the tournament, while Malisse, ranked 75th in the world, enjoyed his first win over the world number 27.

The result followed a theme on a day when three other American players were sent packing and the host nation was left winless.

Bobby Reynolds was bounced out 6-3 6-2 by Czech third seed Radek Stepanek while Robby Ginepri was also beaten in two sets, 7-5 6-3, by seventh-seeded South African Kevin Anderson.

Completing the miserable day for the US was Jesse Levine, who lost 7-6(2) 6-4 to Lukasz Kubot of Poland.

In other results, fourth seed Milos Raonic saw off Ernests Gulbis of Latvia, the Canadian winning 6-2 7-6(3) to book his place in the second round.

But sixth seed Julien Benneteau of France was downed 7-6(5) 7-6(6) by Germany's Philipp Petzschner and Alex Bogomolov, the fifth seed, was beaten 1-6 6-4 7-6(5) by Olivier Rochus of Belgium.

Benjamin Becker and Juergen Melzer also won to live another day, rounding off the day's action with victories over Dudi Sela and Denis Istomin respectively.

Eurosport