Complex sentence: John "Johnny" Bullock was a professional rugby league footballer who played in the 1950s, playing at club level for Wakefield Trinity (Heritage № 627), as a, i.e. number 7.
Split into simpler sentences: John "Johnny" Bullock was a professional rugby league footballer who played in the 1950s. He played at club level for Wakefield Trinity (Heritage № 627), as a, i.e. number 7.