MONTE CARLO (Monaco), Oct 3: Usain Bolt’s three world records at the Beijing Olympics were officially ratified on Friday by the IAAF.

The Jamaican sprinter set new marks in the 100 and 200 metres and also ran the third leg of the fastest ever 4x100 relay along with countrymen Nesta Carter, Michael Frater and Asafa Powell.

Bolt ran 9.69 seconds in the 100 while slowing down in the final 10 metres, on Aug 16 to beat his own mark of 9.72, set in New York on May 31.

Four days later, he clocked 19.30 seconds in the 200 to beat the 12-year-old record owned by Michael Johnson and set at the Atlanta Olympics in 1996.

The Jamaican relay team ran 37.10 seconds on Aug 22 to slice .30 off a mark set by two American relay squads in 1992 and 1993.

The IAAF also ratified the women’s world pole vault record of 5.05 meters set by Russia’s Yelena Isinbayeva in Beijing. She beat her own mark of 5.04 set in Monte Carlo on July 29.

The women’s steeplechase world record of 8 minutes, 58.81 seconds set by Gulnara Galkina-Samitova was made official.—AP