International Olympic Committee president Jacques Rogge has praised plans for London's 2012 stadium.
Rogge competed in yachting at the 1968, 1972 and 1976 Olympics
Rogge said the idea to reduce the capacity of the £496m stadium from 80,000 to 25,000 seats after the Games was a good use of money.
"It's an interesting model, it reminds me of Atlanta (1996) which was a very big stadium," Rogge said.
"That was reduced after the Games for a baseball stadium for about 20,000 and that's an intelligent model."
Rogge believes scaling down the size of the London venue once the Games have finished will ensure its longevity.
"You don't want to build white elephants that are not sustainable after the Games," Rogge told Sky News.
There is the investment for the Games time and the legacy for the long term. It is a very good combination of both."
"You build exactly what you need for the Games and then reduce afterwards for post-Games use. I think it's a very good model.
"A legacy is exactly what London needs. You have to look at the investment in two ways - there is the investment for the Games time, and the legacy for the long term. I think it is a very good combination of both."
Rogge also said he had no issue with the stadium being handed over to a football club afterwards rather than just being preserved for athletics use exclusively.
Leyton Orient chairman Barry Hearn is confident he can strike a deal to move his League One club into the Stadium in Stratford after 2012.
And Rogge added: "It's not an issue. You play football every weekend or every second weekend on your pitch, and you might have five to six track events each year.
"Every stadium that combines a football pitch with an athletics track finds you have far more football than athletics."