The men’s and women’s captains at the launch of the Guinness Six Nations Championship in London on Wednesday. From left:   Siwan Lillicrap (Wales),  Giada Franco (Italy),  Luca Bigi (Italy),  Stuart Hogg (Scotland),  Jonathan Sexton (Ireland), Alun Wyn Jones (Wales),  Sarah Hunter (England),  Charles Ollivon (France),  Owen Farrell (England),  Gaëlle Hermet (France), Ciara Griffin (Ireland) and  Rachel Malcolm (Scotland).  Photograph: Billy Stickland/Inpho

With four new coaches, predicting the winner of this Six Nations is a tricky business. We have very little information on what game plan the new coach(...)