Charles Woodson was the first and is still the only primarily defensive player to win the Heisman Trophy. Woodson was selected by the Oakland Raiders with the fourth pick in the first round of the 1998 NFL Draft.
Usually, puberty starts between ages 8 and 13 in girls and ages 9 and 15 in boys. This wide range in ages may help explain why some of your friends still look like young kids whereas others look more like adults.
As the teenagers approach puberty, their growth usually stops. Boys tend to reach puberty by the time they turn 17 while girls do the same when they are around 15 to 17 years old. The bones of teenagers grow extremely quickly during a growth spurt, but the tendons and muscles do not.