Wariner has Johnson's record in sight

Olympic 400 metres champion Jeremy Wariner believes he is on course to beat Michael Johnson's world record when defending his world title in Osaka, Japan, this month.

Wariner, who uses Johnson's coach Clyde Hart, says he has been following the training programme his agent Johnson used before setting the record of 43.18 seconds in Seville eight years ago.

"The coach pulled out some of Michael's work-outs and the average times are about the same," Wariner said.

Hart had told Wariner his times in 350 metres training runs were ahead of where Johnson was in his preparation for Seville.

"Now I'm trying to get to that level, coach Hart has been speeding my times up and comparing me," he said.

But Wariner said he was not going to become fixated with becoming the fastest 400 metres runner of all time.

"I'm not going to go after it, if it comes it comes. I am going for victory in the worlds and if I win maybe the record will come as well," he said.

The 23-year-old ran a personal best of 43.50 in Stockholm on August 7 equalling fellow-American Quincy Watts as the third-fastest man ever.

"If I run like I did in Stockholm they are not going to beat me. If I slip up they will beat me - only if I don't run my race," he said.

"My first 200 metres in Stockholm was faster than Michael's in his record. It is between 200 and 300 where I have to work on," he added.

The men's 400 metres heats at the world championships are on August 28 with the final three days later.