League One Oldham Athletic defeated Liverpool to claim one of the great FA Cup upsets in recent years after a 3-2 win at Boundary Park.
On-loan Manchester City right-back Reece Wabara's header proved to be the winner as Liverpool became the fifth Premier League side of the weekend to be eliminated from a team outside of the top flight.
Matt Smith gave Oldham an early lead only for Luis Suárez to cancel out the opener at Boundary Park.
Oldham 3-2 Liverpool
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(01 of51)
Oldham Athletic's Robbie Simpson argues with Liverpool goalkeeper Brad Jones (left) and Martin Skrtel (centre) after a coming together between Simpson and Jones (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(02 of51)
Oldham Athletic fans invade the pitch after the final whistle as they celebrate victory over Liverpool (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(03 of51)
Oldham Athletic fans invade the pitch after the final whistle as they celebrate victory over Liverpool (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(04 of51)
Oldham Athletic fans invade the pitch after the final whistle as they celebrate victory over Liverpool (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(05 of51)
Liverpool goalkeeper Brad Jones (centre) is helpless to stop Oldham Athletic's Matt Smith (not in picture) scoring their first goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(06 of51)
Oldham Athletic's Matt Smith (left) scores their first goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(07 of51)
Oldham Athletic's Matt Smith (right) celebrates scoring their first goal of the game with team-mate Lee Croft (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(08 of51)
Oldham Athletic's Matt Smith (right) celebrates scoring their first goal of the game with team-mate Lee Croft (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(09 of51)
Oldham Athletic's Matt Smith celebrates scoring their first goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(10 of51)
Oldham Athletic's Matt Smith (right) celebrates scoring their first goal of the game with team-mate Lee Croft (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(11 of51)
Oldham Athletic's Matt Smith celebrates scoring their first goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(12 of51)
Oldham Athletic's Matt Smith (left) celebrates scoring their first goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(13 of51)
Oldham Athletic's Robbie Simpson (centre) collides with Liverpool goalkeeper Brad Jones (behind) as they go for the ball (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(14 of51)
Oldham Athletic's Robbie Simpson (centre) collides with Liverpool goalkeeper Brad Jones (behind) as they go for the ball (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(15 of51)
Oldham Athletic's Robbie Simpson argues with Liverpool goalkeeper Brad Jones (left) and Martin Skrtel (centre) after a coming together between Simpson and Jones (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(16 of51)
Liverpool's Luis Suarez (left) celebrates scoring their first goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(17 of51)
Oldham Athletic's Matt Smith (right) celebrates scoring their first goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(18 of51)
Oldham Athletic's Matt Smith (right) celebrates scoring their first goal of the game with team-mates (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(19 of51)
Oldham Athletic's Matt Smith (right) celebrates scoring their first goal of the game with team-mates (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(20 of51)
Oldham Athletic's Robbie Simpson collides with Liverpool goalkeeper Brad Jones (floor) (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(21 of51)
Liverpool's Luis Suarez (right) scores their first goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(22 of51)
Liverpool's Luis Suarez (left) leads the Liverpool team out for the start of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(23 of51)
Liverpool manager Brendan Rodgers (right) sat on the bench as he waits for the game to start (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(24 of51)
Oldham Athletic manager Paul Dickov and Liverpool manager Brendan Rodgers (left) on the touchline (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(25 of51)
Oldham Athletic manager Paul Dickov and Liverpool manager Brendan Rodgers (left) on the touchline (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(26 of51)
Oldham Athletic manager Paul Dickov and Liverpool manager Brendan Rodgers (left) on the touchline (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(27 of51)
Oldham Athletic manager Paul Dickov gestures on the touchline (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(28 of51)
Oldham Athletic's Robbie Simpson turns away from Liverpool's Sebastian Coates as they battle for the ball (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(29 of51)
Oldham Athletic's Lee Croft (left) gets the assist for team-mate Matt Smith (not in picture) to score their second goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(30 of51)
Oldham Athletic's Matt Smith scores their second goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(31 of51)
Oldham Athletic's Lee Croft (centre) celebrates with team-mate Reece Wabara (left) as he gets the assist for team-mate Matt Smith (not in picture) to score their second goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(32 of51)
Oldham Athletic's Reece Wabara (left), Lee Croft (centre) and Robbie Simpson celebrate team-mate Matt Smith (not in picture) scoring their second goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(33 of51)
Oldham Athletic's Lee Croft (right) celebrates with team-mate Reece Wabara (left) as he gets the assist for team-mate Matt Smith (not in picture) to score their second goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(34 of51)
Oldham Athletic's Lee Croft (centre) and Robbie Simpson celebrate team-mate Matt Smith (not in picture) scoring their second goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(35 of51)
Oldham Athletic's Lee Croft (centre) and team-mates celebrate Matt Smith (not in picture) scoring their second goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(36 of51)
Oldham Athletic's Lee Croft (centre) and team-mates celebrate Matt Smith (not in picture) scoring their second goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(37 of51)
Oldham Athletic's Matt Smith (left) celebrates with team-mates after scoring their second goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(38 of51)
Oldham Athletic's Lee Croft celebrates team-mate Matt Smith (not in picture) scoring their second goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(39 of51)
Oldham Athletic's Matt Smith celebrates with team-mate Lee Croft (right) after scoring their second goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(40 of51)
Oldham Athletic's Reece Wabara (centre) scores their third goal of the game with a header (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(41 of51)
Liverpool's Daniel Sturridge and Luis Suarez (right) stand dejected after conceding their third goal of the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(42 of51)
Oldham Athletic's Reece Wabara (centre) is mobbed by team-mates after scoring their third goal of the game with a header, leaving Liverpool players dejected (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(43 of51)
Oldham Athletic's Robbie Simpson and Liverpool's Sebastian Coates (left) battle for the ball (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(44 of51)
Oldham Athletic's Robbie Simpson and Liverpool's Sebastian Coates (left) battle for the ball (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(45 of51)
Liverpool's Daniel Sturridge (left) and Luis Suarez (second left) stand dejected after conceding their third goal of the game, as they wait to restart the game (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(46 of51)
Oldham Athletic goalscorer Matt Smith (centre) winces in pain after colliding with team-mate Daniel Taylor (not in picture) (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(47 of51)
Oldham Athletic goalscorer Matt Smith (centre) winces in pain after colliding with team-mate Daniel Taylor (not in picture) (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(48 of51)
Oldham Athletic goalscorer Matt Smith (centre) winces in pain after colliding with team-mate Daniel Taylor (right) (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(49 of51)
Oldham Athletic's Matt Smith (left) and Liverpool's Martin Skrtel battle for the ball in the air (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(50 of51)
Liverpool's Steven Gerrard and Oldham Athletic's Carl Winchester (right) battle for the ball (credit:PA)
Soccer - FA Cup - Fourth Round - Oldham Athletic v Liverpool - Boundary Park(51 of51)
Liverpool manager Brendan Rodgers stands in the rain on the touchline (credit:PA)
However moments before the half-time whistle Brad Jones, starting ahead of the rested Pepe Reina in goal for the visitors, spilled a routine cross and the ball was played to Smith who regained the Latics' lead.
Three minutes after the restart Wabara powered in an unstoppable header to double the League One team's lead, prompting Reds manager Brendan Rodgers to throw Steven Gerrard on.
Former Everton striker Jose Baxter passed up a presentable chance when his dink failed to fool the flustered Jones while Robbie Simpson volleyed wide as Oldham attempted to widen the lead.
Matt Smith taps in his second goal
Joe Allen made things interesting when he scored his maiden Liverpool goal via a deflection with ten minutes remaining, before Gerrard thumped the crossbar with a delicate shot as the visitors chased a replay.
However Oldham, semi-finalists in 1994, were not to be denied and fans poured onto the pitch to embrace Paul Dickov's heroic players. For Liverpool, it is the third time they have been eliminated from the FA Cup by a non-Premier League team in five years, after Barnsley and Reading's wins at Anfield in 2008 and 2010.
They will now host Everton in the last 16 in three weeks' time.