I just watched Flo-Jo’s 10.49 race for the first time in a while yesterday and the main thing that struck me was how fast she gets to an upright running position. Ben Johnson had a similar transition to upright running posture. This wasn’t uncommon in that era but these two individuals made especially fast transitions to upright posture. This struck me as a stark contrast to today’s 100m champions who “drive” for 30-40m before they are in a fully upright posture. Obviously, both starts have produced very fast times but there is no one in recent memory who doesn’t at least get to 25m before they are upright. I’d like to hear others thoughts on the pros and cons of each technique and why everyone thinks the start used by Flo-Jo and Ben have gone out of favor.