Oldham v Everton
Everton conceded a last second goal to draw 2-2 with Oldham at Boundary Park.
After the Latics had taken a 13th minute lead, goals from Victor Anichebe and Phil Jagielka looked to have moved the Blues 90 minutes away from a Wembley semi-final.
But, after a late onslaught, home sub Matt Smith bundled in a corner with the last touch of the game to force a replay at Goodison Park.
David Moyes began the game with Anichebe and the recalled Nikica Jelavic operating in tandem up front as the Blues went toe-to-toe with the physical Oldham backline.
But the home side were unyielding in the opening exchanges and Leighton Baines' free-kick - deflected onto the roof of the net - was the only real opening before the first goal.
Lee Croft broke down the right and his cross-shot from the edge of the area was turned in at the far post by on-loan Reading man Jordan Obita.
Everton stuck to their guns and when Jagielka's long pass was headed down by Jelavic, Anichebe capitalised on hesitant defending to steady himself and send an unstoppable volley past Dean Bouzanis, restoring parity on 24 minutes.
Obita proved his goal hadn't been a freak occurrence by striking the inside of the post shortly after the equaliser.
Everton had most of the play for the rest of the half but Marouane Fellaini's looped header onto the roof of the net was as close as they came.
Anichebe was forced off at the break with a knock and Kevin Mirallas replaced him.
The Belgian had an instant impact, serving up a vicious inswinging corner which Jagielka glanced home in front of the travelling fans.
In search of a killer third goal, Steven Pienaar danced through and exchanged passes with Fellaini before testing Bouzanis.
Another devilish Mirallas flag-kick flashed across the face of the goal just before the hour mark and Obita tested Tim Howard at the other end after a Phil Neville error.
The Latics brought on Smith, hero of the previous round win over Liverpool and his effort with 10 minutes left brought the very best from Howard.
Jelavic skied over on an Everton counter after being well-found by Darron Gibson and then Lee Barnard's deflected effort flew just wide.
Then sub Robbie Simpson popped up in front of goal only to be brilliantly denied by Howard. But Oldham piled on the pressure and from a corner in the fourth minute of added time Smith struck.