Sam Dalby's late header stopped Lincoln going nine points clear of Bolton in the promotion race after he secured the visitors a late point in a 1-1 draw at Sincil Bank.
League One side Mansfield Town come from behind to beat Premier League strugglers Burnley and reach the fifth round of the FA Cup for the first time since 1975.
Dundee United come from behind to win a five-goal thriller against 10-man Falkirk and breathe fresh life into their hopes of catching the Bairns for a top-six spot in the Scottish Premiership.
Sandro Tonali scores twice as Newcastle United overcame a series of controversial decisions from the officials to knock 10-man Aston Villa out of the FA Cup.