Matty Blair tried to cross the ball into Mansfield’s area, but he mishit the ball and sent the ball over the stand.
In the third minute, the Stags took the lead. Stephen McLaughlin played a through ball into Jordan Bowery with the forward taking the ball into Cheltenham’s box. Mansfield’s number nine played the ball back to McLaughlin with his shot outside the box straight at Griffiths with the goalkeeper palming the ball into his goal after the midfielder’s shot.
Andy Williams had a chance of his own a few minutes later as his effort was heroically cleared off the line by the Mansfield defenders.
After another corner, Chris Hussey was able to peel away from the Mansfield defence and was wide open with his shot scuffed and cleared away by Bowery for yet another corner.
Alfie May was the target of the corner this time which was once more blocked by the Mansfield backline as they looked to keep their lead intact.
It was all Cheltenham as a dangerous set play from Hussey saw George Lloyd flick his effort onto the crossbar and Will Boyle smash the second effort over the bar.
Blair used his lightning pace to get past Mal Benning as he burst into Mansfield’s area. The ex-Stag tried to pick out one of his teammates in red and white but wasn’t able to do so in the end.
May was able to fire another shot at Marek Stech’s goal. This time the forward gained possession on the edge of the area and found enough space to take a shot but, his effort was easily saved by the Mansfield goalkeeper.
A long throw-in from Ben Tozer saw the ball bobble into the box. May was able to get onto the end of it but fired his effort over.
The last chance of the half saw Hussey deliver the ball into Mansfield’s box which saw Lloyd get on the ball. The 20-year-old handled the ball with the bottom of his hand and gave the Stags a free-kick.
Half-Time: Cheltenham Town 0-1 Mansfield Town
Tozer’s long throw found May but his effort was only able to hit the side netting of the Mansfield goal.
The substitute Finn Azaz whipped the ball into the area as the Robins chased an equaliser but none of the Cheltenham players were able to direct the ball goalwards.
May had another effort at goal, this one was outside the box and didn’t really trouble Stech as the Czech goalkeeper caught the ball once more.
Williams was able to gain possession with 20 minutes to go as he slipped in May with the forward’s effort over and not troubling Stech one bit.
Three minutes later, May found the back of the net with a fantastic bending effort which found the back of the net.
Williams looked to try and get Cheltenham the winner with a ball into the box but his cross went past everyone and Corey O’Keeffe nicked the ball away from May at the back post.
Full-Time: Cheltenham Town 1-1 Mansfield Town
In the first half of extra-time, Jamie Reid was able to get some space in the Cheltenham box and fired a shot at goal with Griffiths making a good diving save.
The counter-attack was on for Cheltenham as Mansfield left bodies forward. May clipped the ball into Williams with the forward’s shot dragged wide of the Mansfield goal.
A mix-up at the back for the Robins presented the ball to Reid with his effort over as both sides chased for a winner.
Lapslie was able to have an effort at goal when he got the ball outside the area. The midfielder’s shot was blocked by Boyle and narrowly wide of the Cheltenham goal as the ball looped close to Joshua Griffiths goal.
Azaz was present with a chance almost instantly in the second half of extra-time as he played May through but the forward’s shot was blocked.
Boyle completed Cheltenham’s comeback as Tozer’s long throw found his defensive partner as he nodded the ball into the goal past Stech.
End of extra-time: Cheltenham Town 2-1 Mansfield Town
Man of the Match: Alfie May
The forward was full of running and did not stop running his socks off. His vital goal in the 73rd minute gave Cheltenham the wind into their sails as the Robins make it through to the Fourth Round of the FA Cup for the first time in 16 years.