English improvement 100m olympic record has been broken repeatedly decreased by only about 10 percent English English 100 meter dash English English English IAAF ανακάλεσε Source male the progression of the 100 meters record English Men's 100 Meter World Record Progression English English record English English English men’s 100m sprint world record 100 m world records English English decreased by only about 10 percent English http://en.wikipedia.org/wiki/Men's_1...rd_progression our data set Men's 100 metres world record progression English improvement English English 100 m English English third fastest time English IAAF ανακάλεσε Men's 100m 3-year-old world record English 100m olympic record the progression of the 100 meters record English Source English the progression of the 100 meters record WR English English English English men’s record http://en.wikipedia.org/wiki/Men's_1...rd_progression English who ran it in 9.58 seconds English English English