Complex sentence: He made his professional debut on 9 August 2011, in the Football League Cup 1--0 defeat to Brighton & Hove Albion at the Falmer Stadium, coming on as a second-half substitute for Barry Fuller.
Split into simpler sentences: He made his professional debut on 9 August 2011, in the Football League Cup 1--0 defeat to Brighton & Hove Albion at the Falmer Stadium. He came on as a second-half substitute for Barry Fuller.