The Spireites battled back from 2-0 down to grab a 2-2 draw at Boundary Park against Oldham Athletic.
James Norwood and Dan Gardner gave the hosts a two-goal lead before Bailey Hobson pulled a goal back before the break.
Hobson won a penalty in the second half, which Quigley converted. Promotion can’t be assured now until Tuesday at the earliest.
Paul Cook made four changes with Darren Oldaker, Hobson, Michael Jacobs and Quigley coming into the starting line-up.
After a fairly quiet first ten minutes, Andrew Dallas was put through on goal by John Lundstram before being brought down in the penalty area by Harry Tyrer.
The Chesterfield goalkeeper could not repeat the feat for the third game in a row and was sent the wrong way by Norwood.
In the 23rd minute, Dallas poked the ball through to ex-Spireite Gardner and the midfielder calmly poked the ball beyond Tyrer.
Within four minutes, the deficit was halved. Quigley did brilliantly to bring a long ball down before slipping the ball to Hobson, who slotted his effort into the back of the net.
The two sides traded efforts just after the half-hour mark. Firstly, Norwood headed narrowly over before Jamie Grimes’ header from Hobson’s cross was saved by Hudson.
The home side ended the half strongly; Dallas had a fierce effort palmed away before crossing back in for Norwood – his header went wide of the goal.
Early in the second half, Norwood had another header that went close before Nathan Sheron’s looping header came off the bar before being cleared.
A double change was made in the 56th minute when Armando Dobra and Ryan Colclough came on for Mike Jones and Michael Jacobs.
The former almost made an immediate impact as his curling effort crashed off the crossbar.
Just after the hour-mark, Hobson made his way from the right-side and into the penalty area before being tripped up by Mark Kitching. Quigley stepped up and calmly slotted home the spot-kick.
Despite the attacking intent, neither side could find a clear-cut chance and had to settle for a point.
The draw does mean that Chesterfield have broken the record for most away goals (35) in a season and also most points throughout a season with 92.
Chesterfield: Tyrer, Sheckleford, Palmer, Grimes ©, Horton, Jones (Colclough 56), Naylor, Oldaker, Hobson (Mandeville 74), Jacobs (Dobra 56), Quigley.
Unused Substitutes: Banks, Grigg.
