Oxford United lost their 100% record but remained top of the table following Saturday's action in League Two.
The U's needed a 97th-minute equaliser from defender Johnny Mullins to earn a 2-2 draw against 10-man Wycombe Wanderers at the Kassam Stadium.
Chesterfield moved level on points with Oxford after winning 2-1 at home to Southend United.
The Spireites were also thankful for time added on, as Armand Gnanduillet came off the bench to net a late winner.
The division's other unbeaten side, Burton Albion, found the net twice in the last seven minutes to snatch at 2-2 draw with Bury at the Pirelli Stadium.
Hartlepool United and Accrington Stanley are the only two teams who remain without a win this season.
Unsurprisingly, those two clubs occupy the relegation places after suffering 1-0 defeats to Fleetwood Town and Cheltenham Town respectively.
Elsewhere, there were wins for AFC Wimbledon, Bristol Rovers, Morecambe, Torquay United and Plymouth Argyle.
Newport County drew at Dagenham & Redbridge, while Mansfield Town and Portsmouth shared four goals at Field Mill.
Results in full: AFC Wimbledon 3-2 Scunthorpe United, Accrington Stanley 0-1 Cheltenham Town, Bristol Rovers 3-2 York City, Burton Albion 2-2 Bury, Chesterfield 2-1 Southend United, Dagenham & Redbridge 1-1 Newport County, Hartlepool United 0-1 Fleetwood Town, Mansfield Town 2-2 Portsmouth, Morecambe 2-0 Exeter City, Northampton Town 1-2 Torquay United, Oxford United 2-2 Wycombe Wanderers, Plymouth Argyle 1-0 Rochdale.
