Tim Benjamin has his sights firmly set on a World Championship medal after his 400m success at the London Grand Prix.
Benjamin's late burst gave him victory at Crystal Palace
The Welshman, who was crowned World Youth champion six years ago, broke 45 seconds for the first time as he upset Olympic gold medallist Jeremy Wariner.
Benjamin said: "Can I do well in the World Championships? Of course I can. I want to go and win a medal now.
"My coach says I can run 44.5 and now I believe it. I'm world class and I've got to get used to it."
Triple jumper Nathan Douglas is also in upbeat mood after continuing his winning streak at Crystal Palace.
The 22-year-old from Oxford registered three jumps over 17 metres to see off the challenge of America's Kenta Bell and World bronze medallist Leevan Sands from the Bahamas.
"I produced one of the best series of jumps I've ever done so I'm really pleased," said Douglas, who is ranked third in the world this year after winning the World Championships trial with a huge leap of 17.64m.
"I feel I coped well against a world-class field. I proved to everyone I can jump well under pressure."