Chesterfield's youth team striker Fabien Johnson came off the bench and grabbed a last minute goal as the Spireites came from 2-0 down to claim their first pre-season victory at Boston United.
Despite trailing by two goals at half time the Spireites showed grit and determination to fight their way back into the match, with goals from midfielder Alex Hewitt, striker Mark Fereday and a late winner from Johnson.
With the sweltering heat and a bobbly pitch, the Blues found it difficult to stamp their authority early on in the match. United striker Leon Squires was causing problems for the back four with his electric pace and hit the post in the 12th minute.
Manager Dave Bentley could only look on as Squires was proving a constant threat and his persistence paid off. Sloppy defending allowed him to nip in the penalty area and defender Jack Broadhead was deemed to have fouled him, and Squires converted the penalty in the 26th minute.
Despite falling behind Bentley's team started to use the ball better, creating chances in the final third with Fereday and midfielder Oliver Brock going close.
Chesterfield were pressing for the equaliser but were dealt a blow as they conceded again just before half time. They needlessly gave away a corner and Pilgrims midfielder Lewis Mckue floated in a cross for Curtis Revell to nod home with a free header.
Bentley made substitutions at half time with the introduction of strikers Joe Mathers and Johnson to freshen up the team, and the changes seem to work as they turned up the heat and were dominating the game.
Fereday and Johnson both went close as they tried to find a way back into the game, as Boston struggled to retain possession as they did so effectively in the first half.
With 30 minutes left on the clock, Bentley changed formation, going 4-3-3 with Fereday, Mathers and Johnson leading the attack, and it wasn't long before they found their way back into the game with a superb free-kick.
Hewitt found the net from 35- yards, his shot bamboozled United's 'keeper Brad Stewart as the ball bounced through him and went in off the post.
The change in formation seemed to work well for the Spireites, the strikers found more room in the final third with Mathers and Johnson creating more chances and testing Stewart.
They eventually levelled the score through the impressive Fereday. His mazy run on the left gave him room to cut in and he fired a long- range shot into the bottom corner with a spectacular strike in the 75th minute.
Boston were powerless to stop the constant threat from the three forwards, and they grabbed the winner in dramatic fashion as the ball fell kindly to Johnson in the penalty area and he lashed the ball in as it thundered in off the crossbar, and the comeback was complete.
Three goals in the last 25 minutes gave Bentley a victory and he was pleased with the victory despite the difficult playing conditions.
He said: " The lads did well today. It was a red hot day and the pitch wasn't so good, but credit to the boys, we have shown a bit of character to come back and grabbed three decent goals."
The pre-season continues for Bentley as they face Staveley U19s on Friday, July 27 and they will be looking to build on this victory.
Chesterfield: Mason, Slack, Colton, Broadhead, McNicholas, Scully, Hewitt, Brock, Partridge, Bowland, Fereday: Subs: Johnson, Mathers.