Jonathan Edwards says Nathan Douglas is a genuine medal contender for next month's World Championships following his fine AAAs win at the weekend.
Douglas is now ranked third in the world triple jump standings
Triple jumper Douglas cleared 17.64m to triumph in Manchester, qualify for the worlds in Helsinki and overhaul Edwards' long-standing AAA's mark.
World record holder Edwards said: "With that jump Nathan has gone from good international standard to world class.
"If he can jump in that form he has a great chance of winning a medal."
Edwards also believes 22-year-old Douglas has got the temperament to reach the very top.
"We have watched him since this time last year when he jumped 16.95m to make the Olympics, where he just missed out on the final," Edwards said.
"He has come through very quickly and this year has got six or seven personal bests.
"But he is very sensible and I think he's got a good head on his shoulders."
Douglas also feels he has a great chance in Finland.
"First things first - try and get to the final - and then anything can happen," the Oxford City jumper said.
Christian Malcolm and Donna Fraser are also determined to take their chances at the worlds after victories at the AAAs.
Malcolm, who held off Marlon Devonish in a photo finish to claim the 200m in 20.65 seconds, said: "Everything has gone really well for me this season.
"I just want to make the final in Helsinki because I know this time I will get it right."
Fraser finally put her long-term Achilles problems behind her to win the women's 400m in a qualifying time of 51.27secs.
The Croydon runner said: "It was just a nightmare. With an Achilles you just don't know - it's got a mind of its own."