Watford goalkeeper Daniel Bachmann apologised to team-mates and supporters after his two early errors condemned them to defeat at Leeds United.
The Austrian fumbled Largie Ramazani's shot into the net after only three minutes and then failed to hold a cross, allowing Brenden Aaronson to add a second.
The Hornets gave a much improved performance following Saturday's 3-0 derby defeat at Luton Town, but could only pull one goal back and lost 2-1.
"The way the game started, it was an uphill battle again, and obviously I've let the lads down," Bachmann told BBC Three Counties Radio.