Third seed Andy Roddick became the first player to reach the quarterfinals of the Queen's Club championships with a comfortable 6-4, 6-4 win against giant South African Kevin Anderson on Thursday.
One break of serve in each set was enough for the American four-time Queen's champion who was rock solid throughout.
The 2.03-metre Anderson stuck to his task but former world number one Roddick showed plenty of grasscourt nous to convert the few opportunities that came along.
"It was solid," Roddick, who cracked down two serves of 225 kmph in the closing stages, said at the courtside.
"I had a game plan and was able to stick to it today. There were never going to be many breaks but that's grasscourt tennis."
Roddick will face seventh seed Fernando Verdasco in the last-eight after the Spaniard beat Argentina's David Nalbandian 7-5, 6-1.
Top seed Rafael Nadal continues his adaptation to grass from clay later against Czech Radek Stepanek after second seed Andy Murray gives his suspect ankle another fitness test against Serbia's Janko Tipsarevic.
Hewitt eases past
Defending champion Lleyton Hewitt had few problems booking his place in the second round at Halle's ATP grasscourt tournament on Wednesday with an easy win over lucky loser Leonardo Mayer.
Hewitt had been due to face French Open finalist Roger Federer in the first-round match - a repeat of last year's final -but the Swiss star's withdrawal on Monday saw Mayer promoted to the main draw.
Hewitt eased to a 6-2, 6-3 win and the former world number one needed just over an hour, blasting down six aces - four of which came in the first set - and was rarely troubled by the Argentinian.
"I don't feel too bad, I had no expectations going out there," said Hewitt after the win which will see him play Italy's Andreas Seppi in the second round.
Hewitt is making a comeback after undergoing an ankle surgery, on the back of two hip operations in the last two years.