An extra-time brace from Sam Clucas fired Chesterfield in to the fourth round of the FA Cup after a 2-0 win over Scunthorpe United at the Proact Stadium.
Nothing could separate the two sides in Tuesday night’s third round replay until the last minute of the first half of extra-time when Clucas broke the deadlock.
His first was a tap in but his second was a superb, curling effort from 25 yards that flew beyond Sam Slocombe in the visitors’ goal three minutes from the end.
The Spireites had the legs on their opponents and Armand Gnanduillet almost added a third with a thunderous free-kick that rattled the bar on the stroke of full time.
It was comfortable in the end for Chesterfield who have a fourth round tie at Championship promotion contenders Derby County at the iPro Stadium to look forward to on January 24.
Chesterfield manager Paul Cook named an unchanged starting eleven for the fourth consecutive game of 2015, a formula that has resulted in two wins and a draw prior to kick off on Tuesday night.
A swift break from the hosts almost saw them take an early lead when Gary Roberts’ ball across goal made its way to the far post where Tendayi Darikwa forced Slocombe in to a save low to his left.
Gnanduillet headed the resulting corner straight at the visitors’ keeper, who launched a long ball forward that saw ex-Spireite Gary McSheffrey have a shot blocked on the edge of the area.
Slocombe was equal to Eoin Doyle’s snap shot from the edge of the opposing penalty area and the visitors’ keeper then made two vital stops to prevent the home side from taking the lead.
Roberts slid in Doyle, who just about kept his balance, before attempting to chip Slocombe but the keeper just got his finger tips to the ball. Gnanduillet then stung his palms with a powerful drive from an angle.
Scunthorpe attempted to release Lyle Taylor in behind Chesterfield’s defence on several occasions, Tommy Lee quick off his line to collect one and the striker wasteful in his only sight of goal at the break.
Doyle fired a shot wide of Slocombe’s left hand post early after the interval for the Spireites, playing their fourth game in eleven days, who were otherwise slow to get going.
Paddy Madden tricked his way past Charlie Raglan and unleashed a powerful drive that narrowly missed Lee’s post, with the Chesterfield keeper at full stretch diving low to his right.
The hosts wobbled but soon regained their composure and Slocombe was again called in to action to prevent Sam Hird from heading Raglan’s knock down in the net from six yards out.
Roberts found the hole in Scunthorpe’s defence to play in Sam Morsy. The Spireites skipper weighed up his options with Romuald Boco free at the back post, but took too long and Marcus Williams recovered to concede a corner.
Chesterfield started to build momentum and when Roberts danced past Neal Bishop, the cross wasn’t fully cleared and Raglan hit a volley that was deflected agonisingly wide of Slocombe’s right hand post.
The home faithful were up in arms when Boyce and Gnanduillet collided in an aerial challenge, with the ball appearing to strike the Scunthorpe defender’s hand but referee Keith Hill remained unmoved.
Nothing could separate the two sides after 90 minutes. Extra-time was needed.
Cook, who brought Jimmy Ryan on for Ritchie Humphreys ten minutes from the 90, replaced Boco with Dan Jones for extra-time. Jones went in on the left hand side of defence and Clucas was pushed further forward.
Lee fumbled a Terry Hawkridge shot from just inside the penalty area ten minutes in to the first half of extra-time and Gnanduillet fired a long range effort straight at Slocombe before blazing well over from close range.
Clucas kept a calm head to roll in Doyle’s right wing cross after a well-worked Chesterfield attack in the last minute of the first half of extra-time. Alex Davey looped a header just over before attempting to catch Lee out with a back-heel.
Clucas scored a spectacular second that had the visiting support heading for the exits as the Spireites looked ahead towards a match with Derby for the first time in 30 years.
Chesterfield (4-4-2): Lee; Darikwa, Hird, Raglan, Clucas; Boco (Jones 90), Morsy (c), Humphreys (Ryan 80), Roberts; Doyle, Gnanduillet.
Subs not used: Wright, Gardner, O’Shea, Evatt, Talbot.
Scunthorpe (4-5-1): Slocombe; Davey, Boyce, Llera, Williams; Madden, Bishop (c), Nolan (Sparrow HT), Osbourne (Hawkridge 93), McSheffrey (Adelakun 55); Taylor.
Subs not used: Weaver, Canavan, Wootton, Mosanya.
Referee: Keith Hill (Hertfordshire)
Attendance: 6,815 (431).