10. Mesut Ozil | Arsenal
A young Mesut Ozil honed his skills on a small-sized fenced-off football court he and his pals dubbed "the monkey-cage".
It taught him how to keep possession in tight spaces, while playing with older kids improved his physicality and mental strength.
Ozil would go on to become one of the world's great playmakers.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: http://gms.to/writeforgms