I actually only ran a 10.2 in high school. I was a bit of a late bloomer as I got a lot faster in college. I was a hurdler and it really strikes me that hurdling increases your sprint speed because it lengthens your stride.
We had one sprinter who officially only ran 9.3 (only?) but I saw him beat a world record holder in the 50 and do it fairly easily.
You would have killed me in the 440 but that is because I could not even hold up for the 220. By about 160 yards the bear would jump on my back.
You should have ran against elementary school girls. You would have kicked their asses.