Barnsley lost 9-1 at home to Leeds United in a behind-closed-doors friendly on Saturday.
James Norwood put the Reds ahead on the Oakwell training pitches.
Both sides are thought to have fielded close to full-strength teams, but the exact line-ups have not been made public.
Liam Kitching was present but did not play due to injury.
Barnsley now visit Hull City on Tuesday from 7.45pm.