Look, when you examine the facts even the improvement from 10.41 to 10.06 (once conditions are taken into consideration) isn’t as dramatic as it may first appear. His 10.41 was run into a head wind two years before (10.42 slight following wind the year before). He was really a 10.3x athlete at his best in the right kind of conditions. His 10.06 was with a +2.0 wind which in still conditions would have placed him at approximately 10.2. In effect he moved from 10.3x to 10.2 in two years.
HOWEVER, regardless of what his potential was, 10.96 was a pretty slow time for him to start the season with and according to his coach at the time, Chambers was not happy with that performance.