What was the fastest 200 meter race ever run?

during 1996 many people claimed that the 200 and 400 meter gold medalist Michael Johnson had been claimed the fastest man in the world instead of the 100m gold medalist donavan bailey because of the earth shattering amount he smashed the 200m world record at 19.32 he beat the previous record by 0.34 secs. A year later a 150m race took place between the two where Bailey won the title due to Johnson pulling out because of injury