Scott Wagstaff hits a brace as League One side fend off West Ham fightback. For the majority of this enthralling FA Cup encounter, you got the sense that West Ham’s players thought they had turned up at Wimbledon for a spot of lawn tennis. There was no nastiness from the Premier League visitors, no grit, no determination to win this fourth-round tie or avoid losing to a side sitting bottom of League One. Only in the second half, once they were 3-0 down, once the Wimbledon supporters were gleefully singing about playing them every week, did they finally wake up. AFC Wimbledon (4-2-3-1): Ramsdale, Watson, Thomas, McDonald, Oshilaja, Nightingale, Wordsworth, Connolly, Wagstaff, Pinnock, Appiah; Subs: Jervis, Garratt, Trotter, Soares, Sibbick, McDonnell, Pigott Scorers: Appiah 34, Wagstaff 41, 46, Sibbick 88 West Ham (4-3-3): Adrian, Antonio, Diop, Ogbonna, Masuaku, Diangana, Noble, Obiang, Snodgrass, Hernandez, Carroll; Subs: Fabianski, Felipe Anderson, Fredericks, Lucas Perez, Holland, Rice, Coventry Scorers: Perez 57, Anderson 71 Referee: Anthony Taylor Manager Manuel Pellegrini made three changes at half time and two of them – Lucas Perez and £40million Felipe Anderson – got goals back. The third did not follow. Instead, it was Wimbledon who rounded off an excitable evening, scoring in the dying moments to cap a historic victory for the club only formed in 2002. It is approaching 40 years since West Ham last lifted a trophy. That was the FA Cup in May 1980, when they defeated Arsenal 1-0 at Wembley. The wait will go on. When asked about Wimbledon’s Crazy Gang history before this tie, Pellegrini gave a puzzled look – the type you might see on a quiz show when the contestant doesn’t have the foggiest. If a fan of Hollywood films, Pellegrini might at least have recognised one of its old members in the crowd. Vinnie Jones, football’s former hard man and 1988 FA Cup winner, watched on. Wimbledon boss Wally Downes had called on his players to channel that Crazy Gang spirit here. They listened, winning every 50-50 as West Ham's stars seemed reluctant to make the effort. Andy Carroll started but in the warm up, from 20 yards out and with no goalkeeper in goal, he hoofed one shot out of the stadium. His feet never were never his strength anyway. The 6ft 4in striker got his head to two corners in the opening 15 minutes but could direct neither of them on target. Carroll then set up Javier Hernandez with a header but he too fired wide. Wimbledon then scored the opener and, to tell the truth, it was fully deserved. Anthony Wordsworth slipped the ball through to Kwesi Appiah, who took a touch and beat Adrian. Suddenly, an FA Cup upset was on the cards, largely because West Ham looked like they could not be bothered. It got worse before half time. Pedro Obiang gave the ball away on the halfway line and suddenly Scott Wagstaff was through. He sprinted for goal with only Adrian to beat and scored for 2-0. Pellegrini walked down the tunnel with a face like thunder. His side had not managed a single shot on target and he brought on £40m Anderson, Perez and Ryan Fredericks. Then, just 38 seconds into the second half, it was 3-0. Appiah crossed and Wagstaff – a free transfer from Gillingham in the summer – poked home from 12 yards. Wagstaff had scored two goals in 27 games before West Ham came to town. Now, he had two in 46 minutes. Co-owner David Sullivan, sat in front of the press box, shook his head. A special mention has to go to Dylan Connolly, too. The 23-year-old Irishman – so unknown he does not have a Wikipedia page – had been outstanding on his first start for the Dons. Finally, West Ham started to pile on the pressure and it became 3-1 before the hour mark. A melee in the box gave Perez a chance to shoot and he buried the ball beyond Aaron Ramsdale. Then, it was 3-2. A free-kick from 25 yards was inviting to Anderson