Hock, on loan from Wigan, is named in the 19-man squad having missed the opening day victory over London with a shoulder injury. That was the first time Widnes had won their opening Super League game at the sixth attempt.
Saints, meanwhile, will be looking to bounce back from last weekend’s shock 40-4 defeat at home to Huddersfield.
Widnes 19-man squad: Allen, Briscoe, Cahill, Clarke, Cross, Flynn, Gerrard, Hanbury, Hock, Isa, Joseph, Leuluai, Marsh, Mellor, O’Carroll, Phelps, Pickersgill, White, Winterstein.
St Helens 19-man squad: Wellens, Gardner, Turner, Soliola, Meli, Hohaia, Lomax, Perry, Roby, McCarthy-Scarsbrook, Puletua, Wilkin, Manu, Laffranchi, Flanagan, Jones, Gaskell, Makinson, Greenwood.
Prediction: Widnes ran Saints close at home twice last season, but are likely to face a backlash from Nathan Brown’s men – away win.
Super League summary: