Match ends, Scunthorpe United 2, Chesterfield 2.
Jay O'Shea grabbed a late equaliser as Chesterfield battled back to earn an FA Cup replay from a pulsating third-round tie against Scunthorpe.
The Iron led thanks to on-loan Chelsea defender Alex Davey's first senior goal and it was 2-0 just before the break when Lyle Taylor ran through to net after a Ritchie Humphreys error.
Eoin Doyle's penalty - his 22nd goal this season - gave the visitors hope.
And O'Shea struck to make it 2-2 from a Gary Roberts cross to earn a replay.
The Spireites, who had to beat MK Dons twice because of an administrative error to reach this stage, showed great spirit to finally break stubborn home resistance and find a way past inspired home keeper Sam Slocombe.
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After Davey smashed in a superb opener from the edge of the box, Slocombe made fine saves from Doyle and Armand Gnanduillet to keep the hosts ahead.
But a careless back header by Humphreys gifted Scunthorpe a second goal, Taylor showing great composure to run through and beat Tommy Lee.
Chesterfield continued to have the upper hand after the interval, forcing more heroics from Slocombe, who denied Gnanduillet, Sam Clucas and Roberts.
However, Doyle struck from the penalty spot after Roberts was fouled to make it 2-1.
Then, with five minutes left, O'Shea converted Roberts' cross from 10 yards to ensure both sides can still reach the fourth round, where a tie at Championship side Derby County awaits.
- 37DaveySubstituted forCanavanat 72'minutes
- 32LleraBooked at 57mins
- 16AdelakunSubstituted forNolanat 61'minutes
- 12BishopBooked at 38mins
- 28McSheffreyBooked at 80mins
- 19TaylorSubstituted forWoottonat 79'minutes
- 18BocoSubstituted forGardnerat 67'minutesBooked at 90mins
- 4HirdBooked at 4mins
- 15HumphreysSubstituted forO'Sheaat 67'minutes
- 11RobertsBooked at 90mins
- Mark Haywood
- Shots on Target
Second Half ends, Scunthorpe United 2, Chesterfield 2.
Attempt saved. Paddy Madden (Scunthorpe United) right footed shot from the centre of the box is saved in the centre of the goal.
Attempt missed. Eoin Doyle (Chesterfield) right footed shot from a difficult angle on the right is too high.
Attempt missed. Neal Bishop (Scunthorpe United) header from the centre of the box is too high.
Sam Clucas (Chesterfield) is shown the yellow card.
Foul by Sam Clucas (Chesterfield).
Kyle Wootton (Scunthorpe United) wins a free kick in the attacking half.
Dan Gardner (Chesterfield) is shown the yellow card.
Marcus Williams (Scunthorpe United) wins a free kick in the defensive half.
Foul by Dan Gardner (Chesterfield).
Attempt saved. Dan Gardner (Chesterfield) right footed shot from the right side of the box is saved in the centre of the goal.
Jay O'Shea (Chesterfield) is shown the yellow card.
Foul by Jay O'Shea (Chesterfield).
Eddie Nolan (Scunthorpe United) wins a free kick on the left wing.
Goal! Scunthorpe United 2, Chesterfield 2. Jay O'Shea (Chesterfield) right footed shot from the centre of the box to the bottom left corner. Assisted by Dan Gardner.
Corner, Chesterfield. Conceded by Andrew Boyce.
Corner, Chesterfield. Conceded by Eddie Nolan.
Gary McSheffrey (Scunthorpe United) is shown the yellow card.
Attempt missed. Armand Gnanduillet (Chesterfield) header from the centre of the box is too high.