Vivian the runner to watch as Kabuu opts for marathon

“The world is yet to see the best of me.” That was the answer from dimunitive double world champion, Vivian Cheruiyot, ahead of Friday's selection of the women’s 10,000 metres team for the London Olympic Games.

“I still want to improve on my running style since I am not yet satified with my speed,” she said.

Despite being the overwhelming favourite for both 10,000m and 5,000m, Cheruiyot was hesitant to openly declare her dream for a double at next month’s Olympics.

The 29-year-old described Friday's field as strong and interesting: “Whoever will carry the day depends on how she has trained and woken up.

“You can be strong but crazy things happen on the day.”

The World Cross Country champion has so far won two Diamond League events, beating arch-rival Mesert Defar of Ethiopia in 3,000m in Doha and 5,000m in Roma.

Perhaps their closest battle was in Roma where Cheruiyot clocked 14 minutes, 35.62 seconds and Meseret 14:35.65.

Kabuu opts for marathon

Cheruiyot has a personal best 30:48.98 in 10,000m, set when winning the world title in Daegu last year, and 14:20.89 in 5,000m from Stockholm in 2007.

She has been training in Eldoret under coach-husband Moses Kiplagat Kirui, assisted by Sammy Rono and Ricky Simms.

The 10,000m also has 2009 World 10,000m winner Linet Masai and Daegu bronze and silver medallist, US-based Sally Kipyego.

The 2006 Commonwealth Games champion, Lucy Kabuu, withdrew from the race, opting for marathon.

The first three across the line get Olympic tickets and the next three the Africa Senior Athletics Championships team in Benin.