Asafa Powell is backing British sprinter Dwain Chambers to give an impressive account of himself at the London Olympics after his ban was lifted.
Chambers, 34, was banned for two years after testing positive for an outlawed steroid in 2003, and is eligible for London 2012 after a court ruling overturned the British Olympic Association's lifetime ban for drug cheats.
He has an ally in 29-year-old Jamaican Powell, a former 100 metres world record holder, with whom Chambers trained earlier this year in the Caribbean.
Friday will see Chambers chase the 100 metres 'A' qualifying standard of 10.18 seconds when he takes on a field including Usain Bolt at the Golden Spike meeting in Ostrava.
Powell told ITV News: "Dwain is working hard. He really deserves this and he's a real cool guy and we enjoy training with him here, a real good vibe.
"Hopefully he gets to go there and run well. You know for me he is pretty much the best chance for the UK and the Olympics in London and I'm sure they want someone in the final and I think Dwain is the best chance."
Asked whether he backed the decision to let Chambers run in London, Powell said: "Yeah definitely, I welcome that. Ever since he's been here I was hoping that he'd get the chance to run at the Olympic Games so I'm happy for him."
Canada's disgraced former sprinter Ben Johnson has also said Chambers should have the right to run at his home Olympics.
"He deserves a second chance, yes, everybody deserves a second chance in life," Johnson said.
"Nobody should point a finger and say he's bad and that. There's many people who've done bad things in the world but we don't know. No-one should judge anybody."
Johnson was thrown out of the 1988 Olympics in Seoul after winning the 100m, being stripped of his gold medal after testing positive for a steroid.
He later returned to action but was banned for life in 1993 for failing another drugs test.