According to answers.com, in his prime Green ran a 4.125 40 and in 1986 was unofficially timed at 4.09. also there is a video of darrell running a 3.9 go to google or youtube and enter darrell green dash.
A 12.07 time in the 100-meter dash is equivalent to 11.03 seconds in the 100-yard dash.
11.72 100 meter time to 40 yard dash
a good time in the 70 meter dash for an olympic medalist would be about 6.8 to 7.6
just add .46 to the time if you are a boy and .56 if you are a girl.
10.5
His 5.0 40-meter dash translates to a time of 4.572 seconds in the 40-yard dash.
An average time for a 14-year-old running the 50 meter dash is around 9 seconds. For a 100 meter dash, it would be about 13 seconds.
9.58
In 2008, the Qualifying time for the 100m dash was 10.07s
A good time for 100 meter dash for your age is 11-12.5 seconds.
Around a 24-28 seconds on 200 meter dash is a good time.