Bolt No Problem with Chambers

Usain Bolt says he has no qualms about racing against Dwain Chambers ahead of their 100m clash in Ostrava on Friday.

The pair could face each other at London 2012 after Chambers won the right to compete at the Games when a by-law that banned drug cheats from competing at Olympics was overturned.

"Rules are rules," Olympic and world champion Bolt told BBC Radio 5 live .

"If the rules say it's OK for him to come back then who am I to complain? There are rules for a reason."

The 25-year-old added: "I'm just focused on whoever is beside me in a race and I'll compete at my best."

Friday's 100m race in Ostrava, Czech Republic, will be the first time 34-year-old Chambers will have competed against the world's fastest man in an individual race outside of a major championship.

"No matter what happens, whenever you get a chance to race against Usain you can only get the best out of yourself," Chambers said.

"He's in 9.82 [seconds] form and he's probably going to get faster and faster so I've just got to do my best to keep close to him."

Chambers's only competitive race over 100m this season saw him record a time of 10.52secs.

“I'm going to be going up against runners who are effectively sub-9.8 runners and I haven't been in that calibre for a long time.”Dwain Chambers

The Briton will be hoping to clock the Olympic 'A' qualifying standard of 10.18 for a chance to compete in London.

He hopes that racing against the best in the world will help him reach that mark.

"It's going to make a massive difference because compared to the level of competition I've been running against for the last few years, the quality is higher," added Chambers.

"In order to beat the best you've got to compete against the best in the world and those opportunities weren't available to me.

"I'm going to be going up against runners who are effectively sub-9.8 runners and I haven't been in that calibre for a long time."

Chambers will also face Jamaican Lerone Clarke and United States sprinter Darvis Patton, who have recorded times of 9.99 and 10.04 this year.