United States sprinter Jerome Singleton has backed calls by Oscar Pistorius for a review of runners' artificial running prostheses after the South African claimed he was at a disadvantage over blade length.
The 26-year-old also said he believed the time had come to end joint category races, to avoid allegations of unfairness between single and double-leg amputee runners.
Speaking after securing a place in the T44 100m final in London yesterday he said: "All I know is that there is a maximum height [for running blades].
"I think we need to come together and re-evaluate the formula and have an idea of the exact height for an athlete to run in or maybe have a variation in height of 1cm, so you know you're racing the same athlete in all competitions."
Singleton, a former National Aeronautics and Space Administration intern, added: "As time changes science changes too, so we just have to make sure that it is fair to all competitors. Right now it's like [comparing] apples to oranges not apples to apples."