Twizel's favourite Australian Matt Gunn is back for another edition of Let's Be Positive, where he and It's Only Sport host Martin Devlin do their best to put a positive spin on all the recent happenings in sport, This week, Gunny and Marty are positive about the Bulldogs' 13-12 golden point victory over the Warriors in the NRL, the All Blacks' test season getting underway to a rocky start, Lulu Sun's incredible performances at Wimbledon, and more.