4 tenths improvement in 13 days

[rainy.here]

@Track_man

Someone on my team ran a 11.93, and then 13 days later ran 11.51.

He himself was very surprised… his training before both meets was virtually the same. I watched both races and he didnt have a bad start in the first one or any other major things that could have cost him much time.

So what are thoughts on this 4 tenths drop in time in just 13 days?

It is possible, but not to actually make those gains in speed. Perhaps there were wind differences, and he had a sluggish start with the 11.93 and a good start with the 11.51. Maybe he was tired and exhausted, and/or poorly warmed up for the 11.93. What was his pb before the 11.51?