New West Bromwich Albion head coach Carlos Corberan began his reign badly as the relegation-threatened Baggies lost at home to pre-season promotion rivals Sheffield United.
Two goals in the first 23 minutes from Blades strikers Iliman Ndiaye and Oli McBurnie leave the Baggies still in the Championship drop zone.
After Swansea City only managed a draw in the other lunchtime kick-off, it lifted Paul Heckingbottom's men a place back up to fourth in the Championship table, as the Blades finally put an end to their previously winless six-game run in October.
Victory came at a cost, however, with the loss of striker Rhian Brewster with a hamstring injury, just 11 minutes after coming on as a second-half substitute.