Wigan Athletic struck either side of half-time to ensure Nottingham Forest would exit the Emirates FA Cup at the DW Stadium this afternoon.
Goals from Will Grigg and Yanic Wildschut condemned The Reds to their fifth straight defeat in all competitions and secured a place in the fourth-round draw for The Latics who produced a strong performance.
Head coach Philippe Montanier made one change from Monday's defeat against Barnsley as Nicklas Bendtner replaced David Vaughan in the starting line-up after the midfielder suffered a recurrence of a rib injury in midweek.
The introduction of Bendtner saw Montanier opt for a 4-2-3-1 formation with Britt Assombalonga leading the line and the Dane taking his place just behind the striker.
It was the visitors who looked to have taken an early lead after Nicolao Dumitru ran on to a through ball from Ben Osborn and neatly slotted the ball past Jakob Haugaard who was making his debut in goal for the home side. Celebrations were short lived however as the assistant referee flagged for offside.
Minutes later the home side had a good opportunity to go in front after Eric Lichaj conceded a free-kick on the edge of the Forest penalty area. Nick Powell stepped up for Wigan but saw his effort sail wide of Stephen Henderson's goal.
The hosts continued to press and create half-chances but failed to test the Forest goalkeeper. Michael Jacobs came closest after 10 minutes but the midfielder dragged his shot wide after finding space inside the visitors' penalty box.
Despite a bright start both teams struggled to find any rhythm for the remainder of the first-half and were creating very little in front of goal.
That was until Grigg tapped in from close-range after Warnock's low cross from the left. The Northern Ireland international beat Michael Mancienne to poke the ball past Henderson and give the hosts the lead in stoppage-time.
The Latics took the momentum into the second half and went close on 51 minutes through Jacobs, first with a left-footed shot from the edge of the area and then again when he was denied by a last ditch tackle from Mancienne.
Five minutes later the hosts did manage to double their lead through Wildschut. After a break down the left, substitute Jordi Gomez pulled the ball back to the former Middlesbrough man who powered his shot low and hard past Henderson.
Montanier's men did receive a glimmer of hope when substitute Lica was brought down inside the box with ten minutes to go. However captain Eric Lichaj saw his effort saved by the feet of Haugaard to cap off a miserable afternoon for The Reds at the DW Stadium.
Forest: Henderson, Lichaj (c), Mancienne, Lam, Hobbs, Pereira, Cash, Osborn, Dumitru (Carayol 63'), Bendtner (Vellios 82'), Assombalonga (Lica 56')
Subs not used: Stojkovic, Mills, Perquis, Grant
Bookings: Hobbs 6', Pereira 90'
Wigan: Haugaard, Buxton, Power, Morsy, MacDonald, Jacobs, Warnock (c), Powell (Gomez 8'), Wildschut (Le Fondre 69'), Burn, Grigg (Flores 88')
Subs not used: Jaaskelainen, Woolery, Burke, Barrigan
Goals: Grigg 45', Wildschut 57'
Bookings: MacDonald 13', Jacobs 36', Flores 90', Power 90'
Referee: Oliver Langford
Attendance: 5,163 (1,579 away)