After defeat on his return to Upton Park, Sam Allardyce knows Sunderland cannot afford to drop points against out-of-sorts Crystal Palace.
Sunderland manager Sam Allardyce wants his players to learn lessons from the weekend defeat to West Ham and apply them in Tuesday's crucial clash with fellow Premier League struggler Crystal Palace.
Michail Antonio's solo effort half an hour in ensured the home side maximum points at Upton Park on Saturday as Allardyce came away with nothing against his former club despite a spirited second-half display from the visiting side.
Missed chances proved Sunderland's downfall after the break as it failed to leapfrog rival Newcastle United and move out of the bottom three.