Andy Staples posted the following response link http://www.signonsandiego.com/uniontrib/20050418/news_1s18forty.html to a report that a San Diego area player ran a 4.28. I know 40 times are kind of ridiculous any more, but this article from 2005 really brings it into context just how ridiculous these times are. The piece actually breaks down Roid Aided Ben Johnson's World Record 100m from the Olympics.
Timing officials have since broken down that famed race into 10-meter increments, and Johnson was so preposterously fast that he went through 50 meters in 5.52 seconds and 60 meters in 6.37 – both under the current world records at those distances. He went through 40 yards that day in 4.38 seconds.
So when we see these ridiculous low times that kids run these days they are just that RIDICULOUS! (Well except for anything Denard does, of course!)