Radio Sport Breakfast

An extremely relaxed Joseph Parker has sounded a warning about how beneficial his surgery has been.It was revealed last week that the Kiwi heavyweight had a double elbow operation in December to help with ongoing discomfort.Parker's camp believe it will be a game-changer for Sunday's unification bout against Brit Anthony Joshua, and the boxer himself agrees.READ MORE: Steve Bunce - Parker is the better boxer, but Joshua should win"I can punch with no hesitation, I have no doubts that when I punch there will be no pain. I got my speed back, the movement that I had before is back and everything has gone up a level."Parker told the Radio Sport Breakfast he doesn't even need to worry about getting aggressive yet."When I'm in that ring and we touch gloves, that's when I actually flick the switch on."Before that there's no point in switching it on because you've just got to stay relaxed and calm and that's the best way to approach the fight, you don't waste any energy doing that."LISTEN ABOVE JOSEPH PARKER SPEAKS W