Complex sentence: Born in Northampton, Northamptonshire, Challinor began his career in the youth system at Rushden & Diamonds, making his first team debut for the Football Conference club as an 18-year-old in a Conference League Cup game against Farnborough Town on 22 December 1998.
Split into simpler sentences: Born in Northampton, Northamptonshire, Challinor began his career in the youth system at Rushden & Diamonds. He made his first team debut for the Football Conference club as an 18-year-old in a Conference League Cup game against Farnborough Town on 22 December 1998.