Britain's Tim Henman opened his grass-court season in style, beating Andre Agassi in the first round of the Stella Artois Championships.
Henman has been runner-up three times at Queen's Club
Henman, 31, overcame former Wimbledon champion Agassi 6-4 6-4 in the pair's first meeting on grass.
In baking conditions at Queen's Club, the pair traded early breaks before Henman moved ahead at 4-3.
After taking the first set, Henman then broke the American in the first game of the second before wrapping up the win.
But fellow Briton Martin Lee was soundly beaten 6-3 6-2 by Spaniard Fernando Vicente, while Scottish teenager Andy Murray looks set to start his campaign against Serb Janko Tipsarevic on Tuesday.
I've been serving pretty good and that bodes well - it's a good sign
But it was Henman who was first to kickstart his grass-court season with a promising win against eight-time Grand Slam winner Agassi.
The American was seeded 12th on his return to competition after more than two months out.
The 36-year-old opted to miss the entire clay-court season in order to rest his troublesome back and get the best out of the grass-court season.
But he was outclassed by Henman, who has also struggled with back problems during a slump to 76th in the world and third in Britain.
"I've been serving pretty good and that bodes well - it's a good sign," said three-times finalist Henman, who landed seven aces during the match.
"I'm feeling pretty good physically - I've had a minor blip but feel like I've managed it well.
"It's just making the transition from clay to grass - you're waiting for the ball and sometimes it's dropping a lot.
"The extra bending put a bit of stress on my back but I didn't feel too restricted and served extremely well when I needed to."
Other Britons in action this week are wildcards Alex Bogdanovic and Jamie Baker.
Baker will meet Surbiton Trophy winner Mardy Fish on Tuesday with a second-round clash with French Open champion Rafael Nadal the prize, and Bogdanovic faces Russia's Dmitry Tursunov.
Nadal, defending champion Andy Roddick and Lleyton Hewitt have all been given first-round byes.