Valerie Kasanita Adams, a shot putter from New Zealand, a four-time World champion, three time World Indoor champion and two-time Olympic and Commonwealth champion, thanked her chiropractor In a tweet for her 51st straight win.
Canadian hurler Perdita Felicien , who won a world outdoor title in 2003 and a world indoor title in 2004, has announced her retirement at an elementary school in Toronto. She also won a silver medal in 2007.
The disqualification of Olympic 100m champion Usain Bolt, 25, at the World Championship has prompted a review of the false start rule that calls for the immediate disqualification of a runner if they start before the gun.
After the Formula One Teams' Association made its objections known it took the governing body of Formula 1 just two hours to decide that their new system for selecting the 2009 Formula 1 World Champion should be deferred for a year.