Chesterfield retained top spot in League Two after a draw at fellow promotion hopefuls Scunthorpe.
The hosts took the lead when Paddy Madden's shot was spilled by visiting keeper Tommy Lee and striker Sam Winnall tapped home the rebound.
Eoin Doyle levelled from the spot before the interval after veteran full-back Ritchie Humphreys was brought down in the area by Terry Hawkridge.
Both teams pushed for a winner but it finished level.
The Spireites did have the ball in the net in the second half but Doyle's rebound was ruled out for offside.
Scunthorpe, who are unbeaten since Russ Wilcox replaced Brian Laws 14 matches ago, have now drawn their last five games and sit third.
VIEW FROM THE DRESSING ROOM
Chesterfield manager Paul Cook told BBC Radio Sheffield:
"We've been on a good run and it would have been nice to win again, but unfortunately we haven't.
"I think you must respect the opposition as well - Scunthorpe are a very good side, they've got good players throughout the team and they pose threats up front.
"I thought we'd go and dominate the second half, I really did, and I thought we'd kick on, but that never happened."
Scunthorpe boss Russ Wilcox told BBC Radio Humberside:
"I think we showed what we're about - resolute and strong. We were maybe not as creative as we'd like to be but I thought the front two today caused Chesterfield problems.
"We got down the side of them of them fairly well, used that pace and the game could have gone either way at the end.
"I've not looked at the bigger picture today, I'm looking at us playing Chesterfield who are a terrific side and we matched them."
Scunthorpe United 01 Slocombe 02 Ribeiro 18 Nolan 04 McAllister Booked 05 Mirfin 06 Canavan 14 Hawkridge (McSheffrey - 61' ) 24 Syers (Sparrow - 76' ) 27 Madden 29 Winnall 30 Williams Substitutes 07 Sparrow 13 Severn 16 Adelakun 19 Collins 25 Boyce 28 McSheffrey 39 Hayes Chesterfield 01 Lee 07 Darikwa 15 Humphreys 05 Morsy 23 Evatt 06 Cooper 12 Ryan Booked 26 Gardner (Talbot - 61' ) 11 Roberts 17 Doyle (Gnanduillet - 66' ) 02 Banks (Richards - 66' ) Substitutes 03 Smith 04 Hird 09 Richards 10 O'Shea 21 Gnanduillet 25 Talbot 35 Dunbavin
Ref: Lee Mason