Oldham hit back in the rain to preserve their unbeaten away League record with a 2-1 win at Chesterfield.
Rai Simons came off the bench for Chesterfield in the 80th minute, but could not help to prevent the defeat.
The home side led through Sylvan Ebanks-Blake but Dominic Poleon equalized in the 72nd minute and Danny Philliskirk clinched Oldham's third win of the season with a late strike that went in off Tommy Lee.
REGGIE LAMBE
An early first half-goal from Marc Richards earned Northampton a 1-0 victory over Mansfield.
Reggie Lambe started for Mansfield playing 89 minutes.
The match winner came in the fourth minute when Alfie Potter beat Nicky Hunt on the left flank and provided the perfect cross for his skipper to head home.
