Ipswich wasted a chance to regain second place in the Championship as Cardiff struck twice in stoppage-time to seal a dramatic 2-1 win over the promotion chasers on Saturday.
Wales striker Kieffer Moore netted for Ipswich with just 11 minutes left in the Welsh capital.
But Cardiff's Ryan Wintle punished slack marking in the fifth minute of stoppage-time as Ipswich failed to deal with Rubin Colwill's cross.
And five minutes later, Perry Ng hooked the ball towards the far post at a chaotic corner and Callum O'Dowda volleyed home with virtually the last kick of the match.
The defeat leaves third-placed Ipswich one point behind Leeds, who had moved in to second place after Friday's 2-0 win at Sheffield Wednesday.
With nine games left, Ipswich have squandered their advantage in the race to secure one of the two automatic promotion places to the Premier League.
Leicester extended their lead at the top to three points following a 2-2 draw at Hull.
Fabio Carvalho saw his seventh-minute penalty saved by Foxes goalkeeper Mads Hermansen before opening the scoring nine minutes later.
Jamie Vardy levelled from the spot just past the half-hour mark and added his second moments after Anass Zaroury had put Hull back in front on the hour.
Fourth-placed Southampton moved to within five points of Ipswich, with a game in hand, after beating Sunderland 4-2 at St Mary's.
Stuart Armstrong put the Saints in front after nine minutes before Adam Armstrong doubled their advantage from the spot eight minutes before halftime.
Romaine Mundle and Jobe Bellingham drew Sunderland level, but substitute Joe Rothwell's quickfire brace condemned the Black Cats to a sixth successive loss.
Norwich moved above Hull into sixth place on goal difference after thrashing bottom of the table Rotherham 5-0 at Carrow Road.
Coventry remain a point behind Norwich thanks to Haji Wright's brace in a 2-1 win at Watford.
Stoke moved out of the bottom three with a 2-1 win at Preston, while Japhet Tanganga netted a 90th-minute winner as Millwall boosted their survival chances with a 1-0 victory over Birmingham.
Middlesbrough beat struggling QPR 2-0 at Loftus Road, while Morgan Whittaker earned Plymouth a 1-1 draw at Blackburn.