DONCASTER have signed the man who has led Chile to their first-ever World Cup – Martin Sigren. The all-action back rower arrives at Castle Park from South American Championship-winning side, Selknam Rugby. “Martin is a player we’ve kept an eye on for the last few months. He’s played some great rugby in the South American tournament,” said Knights head coach Steve Boden. “He’s young, ambitious and wants to make a name for himself on this side of the world. He wants to grow his game so he can hopefully lead Chile to a successful Worl...