Barnet grabbed a much-needed three points at Bristol Rovers.
Izale McLeod put the struggling Bees ahead when he nodded in Mark Byrne's corner after Mark Hughes' flick.
The hosts, who lost striker Scott McGleish to what looked like a serious injury, hit the post through Matt Harold in the first half.
Visiting keeper Dean Brill saved wonderfully from Elliot Richards before Mark Byrne sealed the win with a curled effort in the dying seconds.
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Barnet manager Lawrie Sanchez told BBC London 94.9:
"Excellent performance, excellent result, even more so considering the three young lads playing in the back four. It was a big ask for them.
"Everybody contributed to an excellent performance, we're really pleased.
"I'm very proud of all the players after that result."