Complex sentence: He previously played rugby league, becoming an Australian international and New South Wales State of Origin representative winger while playing his club football in the National Rugby League for the Penrith Panthers, with whom he won the 2003 NRL Premiership.
Split into simpler sentences: He previously played rugby league, becoming an Australian international and New South Wales State of Origin winger. He played his club football for the Penrith Panthers with whom he won the 2003 NRL Premiership.