Paul Ince got the better of former Manchester United team-mate Steve Bruce as League One Notts County dumped Barclays Premier League Sunderland out of the FA Cup with a 2-1 victory.
A much-changed Black Cats side only came to life in the closing stages of the game, and by that point, they were trailing 2-0 after keeper Simon Mignolet had fumbled Craig Westcarr's fifth-minute flick into his own net before 34-year-old Lee Hughes struck with 15 minutes remaining.
Darren Bent's 81st-minute penalty kept the tie alive until the final whistle, but County held out to claim a famous victory which was little more than they deserved.
Steve Bruce made wholesale changes, admittedly some of them enforced, with one eye on next Sunday's derby clash with arch-rivals Newcastle, but the ploy backfired spectacularly as his side slipped to an embarrassing defeat against the side which also provided the opposition in the third round when they won the cup in 1973.
The after-effects of a gruelling Christmas schedule and the demands of next weekend's revenge mission prompted Bruce into a major reshuffle, but he remained confident there was enough quality in his team to get the job done.
But he was sadly mistaken as his stand-ins failed to live up to their billing.