Worcester boss Dean Ryan is prepared to face a Doncaster Knights team "full of momentum" in the Championship.
They travel to Castle Park on Saturday after responding to an opening defeat by Bristol with victory over Moseley.
The Knights won National League One at the first attempt last term after being relegated the previous season, and have since beaten Plymouth and Jersey.
Ryan said: "They'll be confident and full of momentum. They pushed Newcastle in pre-season - it'll be a tough game."
Worcester have recalled centre Andy Symons and flanker Sam Betty to their XV, with England full-back Chris Pennell still not fully fit.
Doncaster name the same side that won in the Channel Islands last time out.
Doncaster: Jarvis; Flockhart, Clark, Armitage, Lewis; Lennard, Palu; List, Hunter, Quigley; Challinor, Hotson; Makaafi, Hills, Shaw.
Replacements: Davies, Bergmanas, Davies, Phelan, Eggleshaw, Bulumakau, Bravo.
Worcester: Howard; Smith, Grove, Symons, Biggs; Mieres, Mulchrone; Bower, Annett, Schonert; Percival, Sanderson; Williams, Betty, van Velze (capt).
Replacements: George, Daniels, Rapava Ruskin, Cox, Arr, Eden, Stelling.