Coldstream have been sucked into the relegation quagmire after this narrow defeat to second-bottom Heriot-Watt University.
Chris Donnelly poked home the only goal of the game on then hour to hand the visitors a crucial three points.
With bottom club Civil Service Strollers also winning, the bottom four are now separated by only four points with games running out.
Coldstream remain fourth bottom, but Leith Athletic and Heriot-Watt both have two games in hand.
“It was a tight game,” reflected Coldstream manager Neil Oliver after suffering his first defeat since taking charge.
“I said to the players at half time that one goal could win the game and that is the way it proved to be.
“It wasn’t for the lack of effort.
With so much at stake in this game, both teams were determined not to give anything away and chances were few and far between in an evenly-contested first half.
The best opportunity fell to the home side when Andrew Douglas found time and space in right-side of the box, but his low shot was well saved by the impressive Heriot-Watt goalkeeper.
The only goal of the game came on the hour when a long ball sent Donnelly through on goal.
He held off a defender well to toe-poke the ball advancing past Streamers goalkeeper Mark Walters.
The students should have doubled their lead ten minutes later when Donnelly teed up Brian Anderson, but with only Walters to beat he skied his shot over the bar from close range.
At the other end, however, the Heriot-Watt defence remained solid. Coldstream didn’t have the cutting edge to find an equaliser.
Coldstream: Walters, Wales, Cannon, Allan, Ainslie, Douglas (Birkett 62), S Simpson, Hebdon, Devaney, Crawford, McCrudden. Subs not used: Myer, Baxendale.