Two coaches with everything to prove will square off in the Charity Shield tomorrow night.Steve Price is stepping out of Wayne Bennett’s shadow and unleashing a near full strength Dragons team against South Sydney.Some of the lingering questions after the exit of the master coach, Darius Boyd and Mark Gasnier, will be answered at ANZ Stadium.But after taking out two minor premierships and a title in the past three years, St George Illawarra already have the credibility South Sydney crave.The Rabbitohs begin a new era under new coach Michael Maguire, hoping to make the finals for just the second time since being reinstated in the NRL competition in 2002.Join Mercury senior sports writer Tim Barrow’s live blog of all the action from the Charity Shield from 7pm.Charity Shield