Premier League side Wolves were sent crashing out of the FA Cup on Wednesday, losing 1-0 to midlands rivals Birmingham in a hard-fought third round replay at Molineux.
Birmingham, relegated to the Championship last season, advanced to a fourth round trip to Sheffield United after Wade Elliott scrambled in a 74th-minute winner at the second attempt.
The game had appeared destined for extra-time until Elliott's decisive strike, with neither side able to establish dominance.
But Wolves were made to pay the price when their defence failed to clear a cross and Man of the Match Elliott pounced.
The Birmingham midfielder's first effort hit the post but when David Murphy steered a shot back towards goal, Elliott was on hand to help the ball into the net past helpless Wolves keeper Dorus De Vries.
De Vries was one of 10 changes Wolves manager Mick McCarthy had made from the side which held Premier League pace-setters Tottenham to a 1-1 draw at White Hart Lane last weekend.
Birmingham goal hero Elliott said he hoped the victory would give the Blues confidence as they push for a swift return to the Premier League.
"If we can come to a side like Wolves and get a result that gives us the confidence to take into our league campaign and the belief that we can go out and get results anywhere," Elliott told ITV.
"It's a tough place to come and they're a strong side. But I don't think we nicked it, I thought we moved the ball well and it felt like a deserved win. It's always nice to get through in the Cup."
In the night's other replay, non-league Wrexham's hopes of a fairytale upset against Championship side Brighton were dashed in a penalty shoot-out.
The Welsh club had taken the lead with a sublime curling effort from player-manager Andy Morrell on 23 minutes.
But Brighton hit back 13 minutes from time through Ashley Barnes to force extra-time at the Racecourse Ground.
Neither side could conjure a breakthrough in the extra 30 minutes, setting up a penalty shoot-out. The decisive moment came with Wrexham's first penalty, where Dean Keates saw his effort saved by Peter Brezovan.
With Brighton slotting their next four penalties it was left to Craig Mackail-Smith to apply the coup de grace, hammering home his spot-kick to give the Seagulls a dream fourth round tie with Newcastle.