Mansfield at the double to send Stevenage to third straight defeat
Ryan Tafazolli and Jack Thomas struck in space of five second-half minutes to hand Mansfield a 2-0 win in League Two and extend Stevenage's losing run to three games.
Brian Jensen kept the hosts out inside two minutes, palming away Tom Conlon's goal-bound diving header.
A quiet first half then burst into life in the final six minutes when teenager Thomas stung the palms of Jesse Joronen and Malvind Benning blasted over the Stevenage crossbar.
The Stags were ahead just two minutes after the break when Tafazolli rose highest to meet Adam Chapman's corner and power a header past Joronen.
They swiftly doubled that lead after a quick free-kick allowed Craig Westcarr to look up and square for Thomas, who fired into the roof of the net.
Stevenage striker Tom Hitchcock escaped with a booking after a nasty challenge on Nicky Hunt on the hour mark, while Joronen denied Matt Green when he was clean through on goal.
But the hosts rarely threatened to stage a fightback and slipped to their first home defeat since the opening day of the season.