Complex sentence: William "Daz" Davies is an English professional rugby league footballer who played in the 1960s and 1970s, playing at representative level for Great Britain and England, and at club level for Swinton and Wigan, as a, i.e. number 6.
Split into simpler sentences: William "Daz" Davies is an English former professional rugby league footballer who played in the 1960s and 1970s. He played at representative level for Great Britain and England, and at club level for Swinton and Wigan, as a, i.e. number 6.