Mauricio Pellegrino expects his Southampton team to build on their encouraging draw against Manchester United.
Saints have not won in eight games, but held United in a goalless stalemate at Old Trafford on Saturday.
But while that result will have lifted spirits at St Mary's, their next opponents, Crystal Palace, are also buoyant ahead of what manager Pellegrino regards as a crunch match on Tuesday.
Palace, who are only a point behind Southampton in the Premier League's tightly packed bottom half, claimed a highly creditable 0-0 draw against leaders Manchester City in their last outing.