SportsLondon 2012: David Rudisha breaks world record in 800mNasir QureshiAugust 10, 2012August 10, 2012 by Nasir QureshiAugust 10, 2012August 10, 2012 London: David Rudisha of Kenya set a world record to win the Olympic 800-meter title, finishing the race in 1 minute 40.91 seconds....