Jamie Donley was named EFL Young Player of January
Leyton Orient fought back to boost their promotion challenge and dented that of hosts Wrexham in League One.
Ollie Rathbone hit the opener off James McClean's cross on a night of high expectation among home fans at Stok Racecourse.
But Charlie Kelman levelled after Darren Pratley's assist and Jamie Donley made no mistake as he latched on to a corner.
Orient finished with 10 men after Pratley received a second yellow card. But the night belonged to the visitors as they stayed sixth and now two points behind Huddersfield Town.
There is now a five-point gap between Wrexham, in third, and second-placed Wycombe Wanderers.
Wrexham boss Phil Parkinson:
"We got the goal, we've had other chances to score again, the ball just wouldn't drop for us in and around the box.
"And then the goal conceded we're disappointed with because we've given Kelman time in the box when we know he's a fox in the box, and it's got them back in the game.
"So I thought first half, generally, we were decent, some kind of unforced errors, which we needed to eradicate.
"And then second half, I felt we never played with the composure we needed to play with to win the game. The goal obviously gave them a lift and we were too hurried in possession, we didn't get any control or play like we normally do.
"We never really got to grips with them second half, credit to them."
Leyton Orient boss Richie Wellens:
"What we showed is quality, it was two great finishes and then the desire from several people at the end to put their bodies on the line and block shots.
"Football is about being tactically OK, having talent, speed, technique and all of that.
"But sometimes you need heart, desire and grit and the last 10 minutes, we were really good at that.
"They went for it and chucked everything at us and credit to them for that, but when they do it, you have to stand up."
