Complex sentence: Patrick McManus was a professional rugby league footballer who played in the 1930s, playing at club level for Castleford, as a, i.e. number 8 or 10, during the era of contested scrums.
Split into simpler sentences: Patrick McManus was a professional rugby league footballer who played in the 1930s. He played at club level for Castleford, as a, i.e. number 8 or 10, during the era of contested scrums.