Southampton piled up pressure on Slaven Bilic’s West Ham United after defeating the Hammers 3-0 away at the Olympic Stadium.
Charlie Austin, Dusan Tadic and James Ward-Prowse got the goals to seal a fourth win in a row in all competitions for Claude Puel’s side, who have kept clean sheets in all of those successes.
In contrast, West Ham have now shipped 14 goals in four Premier League games, despite the hosts siting deep and allowing Southampton the ball in a bid to avoid the sort of first-half collapse they suffered at West Brom last week.
West Ham applied some pressure early in the second half, but a dreadful lapse in defence allowed Tadic to wrong-foot goalkeeper Adrian and finish into the unguarded net to put Southampton in cruise control and Ward-Prowse capped a thorough beating in stoppage time.
West Ham have now lost five of their six league games and slide into the bottom three. Southampton, meanwhile, are up to 10th.