Birchfield Harrier Daniel Caines believes his move to the United States has paid instant dividends following his victory in the Norwich Union International in Glasgow.
The 26-year-old former world indoor 400 metres champion has endured a torrid time with injury but he held off the challenge of Davian Clarke to win in 46.90 seconds to reap maximum points for Great Britain in the match against Russia, Sweden, Italy and a Commonwealth Select team.
Caines first suffered pain in his knee in December 2003 and in the following eight months had 37 cortisone injections before undergoing surgery, and is now pain free.
The Birchfield Harrier moved to Raleigh, North Carolina, in September 2005 to work under coach Jeff Howser, whom he describes as a "living legend".
Caines said: "It's nice and peaceful. I've got family and friends around me there.
"It's a change to the system but a change that I've relished and I'm back in a British vest and I've won my first race.
"If I want to give myself the best chance, the opportunity to run well, then I'm going to do it.
"I'm not where I want to be yet but it takes longer than three months to get back there."
Caines' Birchfield teammate and Olympic heptathlon bronze medallist Kelly Sotherton was happy with her preparations for the Commonwealth Games in March, although she was not particularly satisfied with her efforts in Glasgow.
"Training is going the way it should be going," she said. "I'm not going to gush and say it's going amazingly well but I'm quite happy with it."
The 29-year-old set a personal best of 8.26 secs in the 60m hurdles race - which was marred by a number of false starts which saw national record holder Sarah Claxton disqualified - before equalling her best of 6.44 metres in the long jump.
Sotherton added: "I didn't have any rhythm to my runway stage, I jumped terribly, my run-up was awful, but it's the first time out so sometimes that happens.
"The long jump let me down a bit because I thought I'd jump a lot further but I'm never satisfied and overall it's about seven out of ten."
Nathan Morgan, meanwhile, denied he had been motivated by financial gain by opting to go to the World Indoors in Moscow rather than defend his Commonwealth long jump title.
"If it was all about money I would have given athletics up a long time ago and got a nine to five job," said the Birchfield Harrier. "It's about going to major championships and my aim is to win medals. I am not the world's best flyer, I don't recover well.
"I'm 6ft 3in and I get squashed. I've had a few injuries in my back and once these things set in it's hard to loosen again."
The 27-year-old set a new personal best of 8.05m at the Kelvin Hall, but needs 8.10m to qualify for Moscow.
World and European indoor 60m champion Jason Gardener claimed his second victory in the space of four days when he held off Russian Andrey Yepishin to win in 6.59 secs - a world leading time until Terrence Trammell's 6.57 secs in Boston on Saturday night.
"I'll run quicker as we go on," said Gardener. "I felt a bit heavy but as we race I'll start to get into a very fluent rhythm with my running.
"I've worked very hard and I'm looking to run quicker come the Commonwealth Games in March."
Andrew Baddeley won the 1,500m in a personal best of 3.43.50 and James Thie set a new best of 7.56.22 in a 3,000m won by Kenyan Paul Bitok in a new stadium record.