The defender usually depends on the sport. In soccer (football) the defender is the one that protects the goal. I don't know much about football (American Football)
A football position
1 john terry 2 gerrad pique 3 ferdinand
a defender stops the ball from going into the goal the defender stand in front of the goalkeeper and tackles
raping the defender
Yes, you can.
The world best defender is Rio Ferdinand.
The best Soccer Defender and Goalie is:The best defender is Puyol, and the best keeper is Casillas.My opinion of the best defender is Ashley Cole, and the best keeper is Peter Cech.They both play for Chelsea FC.