Match ends, Alfreton Town 3, Grimsby Town 3.
Ross Hannah's hat-trick was only enough to secure Grimsby a point as play-off rivals Alfreton hit back three times.
Kick-off was delayed by 75 minutes after the late arrival of the Grimsby team bus due to heavy traffic.
Hannah converted Scott Neilson's cross for the opener, but Josh Law was teed up by Paul Clayton for the equaliser.
A left-footed shot and penalty saw Hannah twice restore the Mariners' lead but they were pegged back by a John Akinde spot kick and a Clayton strike.
Despite their fightback, Alfreton are now six points adrift of the play-offs with just two games left, while Grimsby move up to third above Halifax, who host Macclesfield on Saturday.
Grimsby Town boss Paul Hurst told BBC Radio Humberside:
"Shaun has done exactly just what I told him not to do at half time, gives away a penalty.
"We scored three goals away from home and we expect to win the game.
"I'm pleased for Ross [Hannah] who gets the ball to take home but I'm sure he will be the first to admit he would have liked it to be with three points as well."
- 2WoodBooked at 19mins
- 6KempsonBooked at 64mins
- 12MeadowsSubstituted forShawat 60'minutes
- 9ClaytonSubstituted forHarradat 89'minutes
- 18AkindeBooked at 34mins
- 26HogansonSubstituted forPokuat 83'minutes
- 5PearsonBooked at 51mins
- 17HannahBooked at 71mins
- 14John-LewisBooked at 38minsSubstituted forCookat 81'minutes
- Peter Banks
- Shots on Target
Second Half ends, Alfreton Town 3, Grimsby Town 3.
Foul by Ross Hannah (Grimsby Town).
Daniel Bradley (Alfreton Town) wins a free kick.
Attempt blocked. Andy Cook (Grimsby Town) right footed shot from the left side of the box is blocked.
Attempt blocked. John Akinde (Alfreton Town) right footed shot from the centre of the box is blocked.
Substitution, Alfreton Town. Shaun Harrad replaces Paul Clayton.
Foul by Shaun Pearson (Grimsby Town).
Darran Kempson (Alfreton Town) wins a free kick.
Attempt blocked. Andy Cook (Grimsby Town) right footed shot from outside the box is blocked.
Foul by Darran Kempson (Alfreton Town).
Andy Cook (Grimsby Town) wins a free kick.
Attempt saved. Daniel Bradley (Alfreton Town) right footed shot from outside the box is saved.
Corner, Alfreton Town.
Attempt saved. Ross Hannah (Grimsby Town) left footed shot from the centre of the box is saved. Assisted by Sam Hatton with a cross.
Foul by Paul Clayton (Alfreton Town).
Scott Kerr (Grimsby Town) wins a free kick.
Attempt missed. John Akinde (Alfreton Town) right footed shot from the left side of the box misses to the left.
Substitution, Alfreton Town. Godfrey Poku replaces Michael Hoganson.
Attempt missed. Shaun Pearson (Grimsby Town) header from the centre of the box is too high. Assisted by Scott Kerr.