West Brom's Scott Carson was hardly the first keeper to gift United a goal. Here are some other classic gaffes - vote for your favourite at manutd.com/polls.
Mart Poom, Derby 1999/00 - The Rams goalkeeper looked sheepish after Dwight Yorke charged down his clearance and gleefully put United in front.
Paul Jones, Southampton 2000/01 - A season after Massimo Taibi's worst moment, Paul Jones reprised it, allowing Andy Cole to score.
Gary Walsh, Bradford 2000/01- The ex-Reds keeper made a mess of a routine backpass, his air-kick enabling Teddy Sheringham a goal.
Jerzy Dudek, Liverpool 2002/03 - The Pole somehow allowed Carragher's header to squirt through his handsclick, giving Diego Forlan the chance to silence Anfield.
Iain Turner, Everton 2006/07 - Unchallenged, Turner dropped a corner at John O’Shea's feet as United fought back to win at Goodison Park.