Rodrigo Muniz was once considered an expensive luxury handed out to Marco Silva, but the Brazilian striker has made the sceptics look silly this season. The former Flamengo forward scored goals against Manchester City, Liverpool, Chelsea and Newcastle United but his brace at the Brick Community Stadium helped Fulham reach the fifth round of the FA Cup despite wobbling against Wigan Athletic this afternoon.

Muniz punished some lethargic Latics defending to fire the Premier League side, but the Whites were rocked when Johnny Smith curled in a sensational equaliser after the break. It offered Shaun Maloney a chance to embarrass his old Hull City boss and, with a shrewd double switch that saw Owen Dale and Ronan Darcy pose Fulham plenty of problems, but it took just five minutes for Muniz to latch onto a lovely Andreas Pereira pass and lash past Sam Tickle.

Maloney refused to allow Steven Sessegnon to join his twin brother Ryan on the pitch as the hosts looked for a leveller. Jason Kerr nodded wide, Darcy curled one just past Steven Benda’s far post before Issa Diop almost put a cross past his own goalkeeper. Benda’s erratic display was more Futurama than Premier League, especially when a fluffed clearance presented Darcy with an open goal, but the former Swansea keeper was saved by an offside flag after spilling Dale’s stoppage-time drive into the path of Darcy.

The hosts probably paid for sitting off Silva’s side in a first half where the Whites should have led by more than Muniz’s close range header from Ryan Sessegnon’s floated cross from the left flank. Martial Godo, who starred on loan with the Latics last term, came close to doubling the lead but ruffled the side netting with the terrific Tickle batting away an Issa Diop header. But, after a few stern words from Maloney – an FA Cup winner with Wigan in 2013 – Athletic levelled when Ryan Sessegnon allowed Johnny Smith to dart inside and bend a superb strike into the top corner from 25 yards.

But the Latics’ lead evaporated quickly when Pereira switched from playacting to playmaking and decisively won his feisty battle with James Carragher. The Brazilian international put Muniz in the clear with a peach of pass and the striker finished fabulously to keep the Whites on course for another trip to Wembley 50 years after Alec Stock’s second tier side reached the final.

But the fact that Silva sent on Sander Berge to shore things up showed just how Maloney’s battlers had rattled their illustrious opponents and suggested that the depth of Fulham’s squad could be overrated. This wasn’t a day for the romantics – or the wider public as the television executives selected other matches for broadcast – but it showed the world’s oldest club cup competition can still leave us all on the edge of our seats.

WIGAN ATHLETIC (4-2-3-1): Tickle; Sibbick, L. Robinson (McHugh 75), Carragher, Kerr; Adeeko (Darcy 61), Scott Smith; Jonny Smith (McManaman 70), Asamoah (Dale 61), Weir, Taylor (Goodwin 71). Subs (not used): Watson, Aimson, S. Sessegnon, J. Robinson.

BOOKED: L. Robinson, McHugh.

GOAL: J. Smith (50).

FULHAM: Benda; Castagne, R. Sessegnon, Diop, Cuenca; Reed, Cairney (Berge 85); King (Smith Rowe 86), Pereira (Traoré 75′), Godo (Iwobi 75); Muniz (Carlos Vinícius 90) Subs (not used): Leno, Andersen, Willian, Jiménez.

GOALS: Muniz (23, 55).

REFEREE: David Webb.

ATTENDANCE: 12,281.