Frazer Richardson and Simon Walton will also line up alongside Danny Pugh in midfield.
Blackwell said: "Last year we didn't have this luxury and it shows how far we have come."
Leeds (from): Wilberforce, Richardson, Carlisle, Kilgallon, Harding, Spring, Einarsson, Walton, Pugh, Ricketts, McKeown, Gray, Smith, Parker, Bayly, Rothery, Morris.