Sheffield United slumped to their 11th defeat in 12 games as buoyant Southampton eased to a 3-0 win to climb into the top four of the Premier League.
Che Adams poked in the opening goal in the 34th minute at St. Mary's Stadium, before further strikes in the second half through Stuart Armstrong and substitute Nathan Redmond sealed Southampton's seventh win in their last 10 league games.
While the south-coast club can perhaps target an unlikely shot at qualifying for the Champions League, United look destined for relegation after a huge fall from grace from last season when Chris Wilder's team contended for the European places until the final weeks.
United remain the only team in the top flight without a win and prop up the table on just one point, five behind West Bromwich Albion in 19th place.
Wilder's team remain without a clean sheet and it was defensive solidity that United prided themselves on last season in their first year back in the Premier League.
Southampton moved above Chelsea and are assured of finishing the weekend in the Champions League positions.