Torquay's play-off hopes still hang in the balance after a goalless draw with already promoted Chesterefield.
But it was also a frustrating night for the League Two leaders, who could be overtaken at the top by Bury, if the Shakers now win at home to Wycombe.
Torquay move up to sixth, level on points with Stevenage and Gillingham, but having played a game more.
Veteran Gulls defender Guy Branston came closest to breaking the deadlock, twice heading against the woodwork.
His powerful first effort, after just four minutes, was deflected off the line and onto the bar following Kevin Nicholson's corner from the left.
Branston then again hit the bar from another Nicholson corner midway through the second half.
Chesterfield top scorer Craig Davies let fly with a 30-yard first-half dipper before hitting another effort that home keeper Scott Bevan was forced to tip over.
Bevan then made a superb save to deny Derek Niven from 20 yards, and then another excellent block stop to deny forward Deane Smalley from close range.
But Torquay had the best chances after the bresk.
Billy Kee's volley screamed just over, before Branston rattled the woodwork once more. And, in stoppage time, Chris Zebroski flashed a header just over from Craig Stanley's corner from the right.
But, although Torquay extended their unbeaten run to 11 League Two matches, it was their third successive goalless draw at Plainmoor.
Chesterfield have now opened the door for Bury, three points behind.
The Shakers, who have a better goal difference, go into their final two games - at home to Wycombe, followed by next Saturday's trip to Stevenage - knowing that two more wins will probably earn them the League Two title.
Chesterfield finish their season at home to play-off chasing Gillingham next Saturday, while Torquay's final game is at Rotherham.