Trotters goalkeeper Jussi Jaaskelainen made several fines saves, denying Jordi Gomez's long-range efforts and Callum McManaman's fine shot late on.
Haidara was taken off on a stretcher to hospital with suspected ligament damage, while McManaman escaped any disciplinary action from referee Mark Halsey.
Zabaleta became just the third player ejected from an FA Cup final when he was shown a second yellow card for fouling Callum McManaman.
Goals from Shaun Maloney and Callum McManaman ensured Wigan reached the final of England's most prestigious cup competition for the first time in their 81-year history.
But when the time came to face one of the biggest clubs in England, Wigan rose to the challenge, led by the outstanding 22-year-old winger Callum McManaman.
Callum McManaman's cross reached Diame, who tapped in the first and after the break McManaman cut in from the wing and curled in to put Wigan 2-0 ahead.
De Ridder then played a part in Wigan's first goal, reacting quickest to stab McManaman's right-wing cross goalwards where Diame was on hand to provide the finishing touch.
Wigan kept its hope of survival alive with a late 2-1 win over Newcastle in a game which was marred by an awful tackle by Callum McManaman on visiting defender Massadio Haidara.
McManaman, another of Roberto Martinez's fringe players, was also keen to make his mark and he scored his first goal after cutting in from the left and curling an 18-yard shot beyond Duke.
The game went to extra-time - Steve McManaman hit the post, Paul Gascoigne came within the width of a beer mat of sliding home the winner and Sandor Puhl, the excellent Hungarian referee, even ruled out a Kuntz header.
Out went nine of the players who started Saturday's 1-1 draw at Anfield, and in came a host of fresh faces including the teenage attacker Callum McManaman, who acquitted himself well until forced off by injury just before the break.
Either side could have grabbed a winner in the last few minutes of the match, first when 19-year-old Wigan striker McManaman forced another athletic stop from flying Finn Jaaskelainen before Wheater smashed a loose ball in the area inches wide of the Wigan goal.
应用推荐