Boxing webchat, with Gareth A Davies Here's the best of this week's boxing coverage: Groves braced for toughest bout yet Londoner is determined to 'make a statement' in Commonwealth title fight against Jamaica's Johnson. Khan eyeing world title rematch against Garcia Amir Khan hopes victory against unfancied Carlos Molina on Saturday will earn him a shot at revenge against Danny Garcia. Hatton: Pacquiao should retire Former world champion Ricky Hatton urges Filipino to call time on his career after brutal knock out in Las Vegas at the weekend. Emotional Pacquiao says he has let country down Manny Pacquiao sheds tears on national television after suffering knockout to Juan Manuel Marquez. Loss wrecks superfight plans Filipino's fight with Floyd Mayweather, reckoned to be worth $200m, now consigned to dust after his knock-out