Edited & Published by Posecoach Nederland Jacky Ledeboer, www.fysio-en-zo.nl. In the first race (300m), Bolt did an attempt to break the WR held by Michael Johnson (30.85). He looks fine in the first part of the race, but in the last 50-100m he's unable to finish as relaxed as usual. It might well be, that lack of stamina on such a "long" race (leading to deteriorating of technique) hold him back from achieving his goal. In the second race Bolt runs a WR on 150m, which distance is much more his specialty. His running looks fine all the way through and fatique doesn't seem to bother him too much this time. Both beautiful and interesting races to watch ;-)