Complex sentence: Neil Courtney is a professional rugby league footballer who played in the 1980s, playing at representative level for Great Britain, and at club level for Warrington, and Wigan, as a, i.e. number 8 or 10, during the era of contested scrums.
Split into simpler sentences: Neil Courtney is a former professional rugby league footballer who played in the 1980s. He played at representative level for Great Britain, and at club level for Warrington, and Wigan, as a, i.e. number 8 or 10, during the era of contested scrums.