The 29-year-old from Canterbury in western Sydney began his professional career with a handful of appearances in the National Rugby League with the Canterbury Bulldogs, making the move to the English Super League in 2009 with stints at Wakefield Trinity and Widnes.
Winterstein also represented the Samoan Rugby League national side before crossing codes to play Rugby Union for Kintetsu Liners in Japan as a hulking, 194cm outside centre.
