Barnsley and Chesterfield had to settle for a point apiece following an entertaining clash.
Reds boss Lee Johnson will have been pleased that his side responded positively following back-to-back defeats over Easter, while opposite number Paul Cook saw his team pegged back following a run of four straight wins.
However, the Spireites remain in the League One play-off positions with four games now left to play.
Fans inside a sun-drenched Oakwell enjoyed an end-to-end first half, but it was the Spireites who led at the interval.
They struck in the 25th minute following an error from Conor Hourihane. The Reds’ midfielder and leading scorer saw his weak pass pounced upon by Jimmy Ryan, who fed Jay O’Shea and he coolly slotted his ninth goal of the season past Adam Davies from an angle.
Earlier Sam Clucas had been thwarted by a superb point-blank save by Davies, while the Reds hit back with George Waring heading Sam Winnall’s cross inches wide at the near post.
Chesterfield defender Sam Hird headed straight at Davies minutes before the opening goal, while just after it the woodwork came to the visitors’ rescue.
Ben Pearson swung in a terrific corner-kick which was met by skipper Martin Cranie, only for his header to strike the crossbar.
In first-half stoppage-time, Waring met another Pearson corner, but was denied by a super stop from ‘keeper Tommy Lee.
Minutes after the restart the Reds almost levelled again when Hourihane fired in a shot which Lee parried.
The hosts did get their goal just after the hour mark.
A cross wasn’t cleared by the Spireites’ defence, Peter Ramage flung the ball back into the box and Winnall was perfectly placed to slide in his 11th goal of an injury-interrupted campaign from 10 yards.
Ryan came closest to a winner late on when he side-footed wide after latching on to Tendayi Darikwa’s cross.