Aron Gunnarsson's 20th-minute strike brought victory for Cardiff City last night.
Wigan had two goals disallowed for offside.
Elsewhere Wrexham drew 0-0 at home to Forest Green.
Russell Slade's side were denied another victory this afternoon after losing 2 goals to nil at home against Derby.
The visitors managed two goals in the first half by Jamie Ward and Chris Martin.
They now sit level with Bournemouth at the top of the table with 28 points.
Cardiff manager Russell Slade says the Bluebirds need a win as they prepare to host Reading in their FA Cup fourth round tie.Read the full story ›
Cardiff City Manager Russell Slade has appealed to fans to understand the club’s need to reign in costs during the January transfer window.Read the full story ›
Cardiff City lost 2-1 to Middlesbrough in the Championship this evening, with striker Kenwyne Jones scoring the only goal for the Welsh side.
It brings further disappointment for Russell Slade's side following their 3-2 defeat to Norwich at the weekend.
Cardiff's boys in blue started their first match back in their traditional kit with a hard fought win over Fulham.
A Sean Morrison header from an Aaron Gunnarsson throw-in early in the first half was enough to secure all three points for Russell Slade's men.
The attendance was recorded at over 22,000 - a huge increase from around 4,000 who attended the Bluebird's last home game against Colchester in the FA Cup.
Elsewhere in the Football League, Newport County secured their fourth win on the bounce - they dispatched Portsmouth 1-0 at Rodney Parade in League Two.
Wrexham fought back from two goals down to draw 2-2 with Stockport, earning an FA Trophy second round replay.
Cardiff City fans have expressed their delight today as the club returned to their traditional blue strip.
Cardiff are playing Fulham this afternoon in blue for the first time since their controversial switch to red two years ago.
Cardiff City have confirmed their game against Fulham this afternoon will go ahead at 3pm as planned, despite concerns over ground safety.
The roof at Cardiff City Stadium was damaged due to high winds, but fire crews have been working to secure the site.
Cardiff City's match against Fulham this afternoon is expected to go ahead, despite damage to the roof of the stadium caused by high winds.
The fire service were called out to carry out repairs this morning and it was thought the game could be under threat, with the club stressing the safety of fans, staff and players was the priority.
But the club have now tweeted that they believe the game will take place.
At this time it is anticipated that the game will go ahead today, but please check for further updates. Our thanks to SW Fire & Rescue
Update CCS: Crews have now started to make safe the cladding on the roof structure
Fire crews have been working this morning to secure the roofing of Cardiff City Stadium following wind damage.
High winds both today and yesterday have damaged the structure ahead of this afternoon's Championship game against Fulham.
The club have stressed that the safety of supporters and staff are the priority. The referee for today's game has been inspecting the pitch and stadium since midday.