The Sunwolves picked up their first Super Rugby win of 2017 on Saturday, beating three-time champions the Bulls 21-20 at Prince Chichibu Memorial Rugby Ground.A much-improved defensive effort and some real impact from the bench saw head coach Filo Tiatia's side beat a South African team for the first time and give Japan's franchise a real boost ahead of a four-week tour to New Zealand and Argentina.It also proved the side are quick learners.Three weeks ago in Pretoria, the Sunwolves failed to make the most of a red card to the Bulls. But this time around a yellow card to Jan Serfontein in t…READ FULL ARTICLE