LONDON, July 25 Sprint superstar Usain Bolt won the 100m at the London Grand Prix here on Friday in astounding style on a day when it was announced five of his fellow Jamaicans had tested positive for drugs.

Despite running into a stiff head wind, world record-holder Bolt, the Olympic 100m and 200m champion, still clocked a time of 9.91sec even though he clearly slowed down in the closing stages.

Bolt, who in Beijing last year set a world record of 9.69sec while winning gold, was not the quickest away from the start but once he was into his stride no-one in final at the Crystal Palace track in south London ever looked like catching him.

It was a display to worry rivals ahead of next months World Championships in Berlin but Bolt, who finished second in his heat, told the BBC afterwards

“I am ready for anything that comes my way. I am not invincible, I am not

unbeatable. Other people will have a good day when I dont, but until then Ill

keep winning.”Reflecting on the race, he added “Overall the main aim for me was the first 50m and I did well, I got it right so Im happy.

“I knew it was going to be a headwind so I wasnt worried about the time. I got a good start, the transition was good so Im happy with myself.

“Im still at 85 percent and after this its all training, Ive got two or three weeks of good training to put in so I guess I will be 100 percent by Berlin,” he added.

Fellow Jamaican Yohan Blake was a distant second to Bolt in 10.11 secs with Antiguas Daniel Bailey third.

Jamaicas former world record-holder Asafa Powell, who before this race insisted Bolt could be beaten, finished well down the field in sixth place.

In the womens pole vault Russias Yelena Isinbayeva suffered her first defeat in a major event since the 2003 World Athletics finals.

World record holder Isinbayeva was beaten on countback by Anna Rogowska of Poland after only clearing 4.68m, the height at which she entered the competition, at her third and final attempt.

Mo Farah failed to break the 27-year-old British record for 5,000m but did at least win the race in a time of 13 minutes 09.14 seconds.

Dave Moorcrofts mark of 13mins 00.41secs - a world record at the time - has stood since July 1982 and Farah, running into a headwind, was always going to be struggling to go under that time.

“It was pretty windy but I just wanted to win if I couldnt run a time and Im really happy with it,” Farah said.

Britains Nicola Sanders, a silver medallist behind compatriot Christine Ohuruogu in the last World Championships in Osaka, continued her return from an ankle injury to win the womens 400m ahead of the American duo of Shana Cox and Monica Hargrove.“I was exhausted coming into the home straight but Im pleased with the win,” Sanders said.

Olympic silver medallist Phillips Idowu could only finish third in the triple jump, with Americas Brandon Roulhac winning and Cubas David Giralt in second place.

Earlier Friday, the International Association of Athletics Federations (IAAF) confirmed that five Jamaican sprinters - four men and one woman - had tested positive for a banned substance at the countrys world championship trials.

The five do not include Bolt or Powell or any of the countrys top sprint stars.

Results

Men's

100m (wind -1.7 m/s)

1. Usain Bolt (JAM) 9.91; 2. Yohan Blake (JAM) 10.11; 3. Daniel Bailey (ANT) 10.13; 4. Simeon Williamson (GBR) 10.19; 5. Ivory Williams (USA) 10.21; 6. Asafa Powell (JAM) 10.26; 7. Craig Pickering (GBR) 10.46; 8. David Kimmons (USA) 10.47.

800m

1. Gary Reed (CAN) 145.85; 2. Adam Kszczot (POL) 146.05; 3. Nick Symmonds (USA) 146.11; 4. Michael Rimmer (GBR) 146.13; 5. Fabiano Peganha (BRA) 146.74; 6. Khadevis Robinson (USA) 146.91; 7. Jeffrey Riseley (AUS) 147.28; 8. Damien Moss (GBR) 147.29; 9. Miguel Quesada (ESP) 147.75.

5,000m

1. Mohammed Farah (GBR) 1309.14; 2. Sammy Mutahi (KEN) 1310.17; 3. Mike Kigen (KEN) 1317.79; 4. Dejen Gebremeskel (ETH) 1320.45; 5. Saif Saaeed Shaheen (QAT) 1329.31; 6. Albert Chepkurui (QAT) 1329.59; 7. Abdihakim M Abdirahman (USA) 1333.79; 8. Bolota Asmerom (USA) 1336.60; 9. Stephen Pifer (USA) 1345.01; 10. Christopher Thompson (GBR) 1350.34; 11. Shawn Forrest (AUS) 1352.08; 12. David McNeill (AUS) 1400.75; 13. Mark Draper (GBR) 1408.72; 14. Ryan McLeod (GBR) 1418.53.

110m hurdles (wind -2.2 m/s)

1. Dayron Robles (CUB) 13.29; 2. Ryan Brathwaite (BAR) 13.31; 3. Andrew Turner (GBR) 13.66; 4. Kirkland Thornton (USA) 13.69; 5. Eric Mitchum (USA) 13.70; 6. William Sharman (GBR) 13.76; 7. Callum Priestley (GBR) 13.81; 8. Antwon Hicks (USA) 13.94.

Triple jump

1. Brandon Roulhac (USA) 17.33 m; 2. David Giralt (CUB) 17.18; 3. Phillips Idowu (GBR) 17.16; 4. Leevan Sands (BAH) 17.13; 5. Onochie Achike (GBR) 17.07; 6. Randy Lewis (GRN) 17.02; 7. Dmitriy Valyukevich (SVK) 16.88.

Shot

1. Christian Cantwell (USA) 21.82 m; 2. Reese Hoffa (USA) 21.55; 3. Tomasz Majewski (POL) 21.43; 4. Adam Nelson (USA) 21.07; 5. Ralf Bartels (GER) 20.91; 6. Daniel Taylor (USA) 20.76; 7. Dylan Armstrong (CAN) 20.34; 8. Scott Martin (AUS) 19.22; 9. Kieren Kelly (GBR) 18.33

Women's

200m (wind +0.3 m/s) 1. Debbie Ferguson (BAH) 23.11; 2. Marshevet Hooker (USA) 23.30; 3. Emily Freeman (GBR) 23.34; 4. Laverne Jones-Ferrette (ISV) 23.39; 5. Bianca Knight (USA) 23.42; 6. Aleen Bailey (JAM) 23.59; 7. Cydonie Camille Mothersille (CAY) 24.27.

800m

1. Jemma Simpson (GBR) 201.08; 2. Jennifer Meadows (GBR) 201.35; 3. Marilyn Okoro (GBR) 201.78; 4. Alysia Johnson (USA) 202.16; 5. Lucia Klocova (SVK) 202.19; 6. Mayte Martmnez (ESP) 202.36; 7. Treniere Clement (USA) 202.78; 8. Maggie Vessey (USA) 203.06; 9. Claire Gibson (GBR) 203.09; 10. Neisha Bernard-Thomas (GRN) 204.55.

4x100m relay

1. USA 142.39; 2. Bahamas 43.35; 3. USA 2 43.51; 4. GBR 143.86; 5. GBR 2 44.14; . Belgium DNF; Germany DNF.

High jump

1. Blanka Vlasic (CRO) 2.02 m; 2. Ruth Beitia (ESP) 1.92; 3. Levern Spencer (LCA) 1.88; 3. Amy Acuff (USA) 1.88; 5. Deirdre Ryan (EIR) 1.88; 6. Melanie Skotnik (FRA) 1.88; 7. Nicole Forrester (CAN) 1.84; 8. Vikki Hubbard (GBR) 1.84.

Pole vault

1. Anna Rogowska (POL) 4.68 m; 2. Yelena Isinbayeva (RUS) 4.68; 3. Monika Pyrek (POL) 4.58; 3. Kristina Gadschiew (GER) 4.58; 5. Kate Dennison (GBR) 4.58; 6. Chelsea Johnson (USA) 4.43; 7. Elizaveta Ryshich (GER) 4.28; 8. Stacy Dragila (USA) 4.28; 9. Lacy Janson (USA) 4.28.—AFP