Actually Jim Hines played 10 games for the Dolphins and 1 for
the Chiefs. Hines ran 9.95 for the gold medal and world record in
the 1968 Olympics. His football catching skills earned him the
nickname "Oops"
The 40-yard dash is ran at NFL combines to measure speed.
Currently, the fastest times are both 4.24 seconds. This is shared
between Rondel Melendez and Chris Johnson.