Complex sentence: Clive Dickinson is a professional rugby league footballer who played in the 1960s, and 1970s, playing at representative level for Yorkshire, and at club level for Castleford, as a, i.e. number 9, in the era of contested scrums.
Split into simpler sentences: Clive Dickinson is a former professional rugby league footballer who played in the 1960s, and 1970s. He played at representative level for Yorkshire, and at club level for Castleford, as a, i.e. number 9, in the era of contested scrums.