At the age of around 15 he converted to a right back and graduated to Middlesbrough 's senior squad in 1997 .
Stockdale began his youth career at Middlesbrough and originally played as a forward .
At the age of around 15 Stockdale converted to a right back and graduated to Middlesbrough 's senior squad in 1997 .
Stockdale began his youth career at Middlesbrough and originally played as a forward .