Chesterfield leapfrogged Scunthorpe United to return to the Sky Bet League 2 summit following their 2-0 win at York City.
The Iron went top on Monday night but were shunted back down to second as the Spireites triumphed courtesy of first-half goals from Eoin Doyle and Gary Roberts.
Oxford United drew at Exeter City in their first outing since manager Chris Wilder's departure for Northampton Town. Caretaker boss Mickey Lewis oversaw the goalless 90 minutes at St James' Park.
A point leaves Oxford in fourth, level on 48 points with Burton Albion and Southend United.
Phil Brown's Shrimpers reached that mark after drawing 1-1 at Dagenham and Redbridge.
Kevan Hurst put the visitors ahead eight minutes into the second half, but they were pegged back by Luke Norris' equaliser 15 minutes later.
AFC Wimbledon came from behind to see off visiting Hartlepool United.
Luke James put Pools in front just before the break but two goals in as many minutes from Will Antwi and substitute Danny Hylton ensured the hosts left with three points.
Peter Murphy scored in injury time to hand Accrington Stanley a 1-0 victory at Bristol Rovers, extending his side's buffer over the drop zone to six points.
Rovers, on the other hand, remain just four clear of the bottom two.
It was a similar story at Wycombe Wanderers, who lost 1-0 to Portsmouth.
Ryan Taylor's penalty five minutes into the second half put Pompey level with Accrington on 32 points, while Wanderers lie three points further back in 21st.
Four fixtures fell foul of waterlogged pitches, with Mansfield Town v Bury, Newport County v Plymouth Argyle, Northampton Town v Rochdale and Torquay United v Burton Albion all postponed.
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