Ross Embleton made just the one change from the weekend victory over Harrogate. 39-year-old Jobi McAnuff was rested for this one with Louis Dennis taking his place in the attacking midfield spot.
The O’s started confidently, knocking the ball about well, however it was to be the Bantams who had the first efforts on goal. Connor Wood found space down Bradford’s left on two occasions, though, fortunately for Orient, he failed to hit the target with either of his strikes.
The visitors continued to bombard Orient’s right-hand side in the early stages, with Wood integral once again. First, he crossed for Billy Clarke whose looping header went narrowly over. Then he released Clarke down the channel, the Irishman’s driven ball in was cut out by Coulson, however, Vigouroux had to be on hand to prevent the O’s skipper from turning into his own net.
Following those early chances Orient dominated possession throughout the rest of the half but were left frustrated by a deep Bradford backline, meaning the game remained goalless going into the break.
Having suffered a knock early on in the first half, Conor Wilkinson was taken off as a precaution at the interval with Jordan Maguire-Drew his replacement.
Embleton’s side came a whisker away from taking the lead immediately after the restart when Brophy’s deflected cross almost found the bottom corner.
The visitors first effort of the second half came in the 58th minute. An in-swinging corner bounced around the area and eventually fell to Clayton Donaldson, whose header was well claimed by Vigouroux under pressure.
The deadlock was eventually broken just after the hour mark. Maguire-Drew lifted a teasing set-piece into box, and it was met by the head of Happe who steered the ball in for his first goal of the season.
Following the opener, Embleton made his second change. Hector Kyprianou the man to make way as McAnuff entered the fray.
A third switch came soon after as Dennis was replaced by Josh Wright.
McAnuff looked to be away for the O’s in the 78th minute but was cynically brought down on the edge by Anthony O’Connor. Maguire-Drew stepped up to take the resulting free-kick and whipped an effort over the wall that looked destined for goal, only for it to ripple the side-netting.
As the clock ticked down, Stuart McCall’s side began to push more bodies forward, however Orient’s defence stood firm and the Bantams never truly troubled Vigouroux’s goal as the O’s held on for a well-earned three points.
ORIENT: Vigouroux, Ling, Coulson, Happe, Widdowson, Cissé, Kyprianou (McAnuff 64’), Dennis (Wright 75’), Wilkinson (Maguire-Drew 46’), Johnson, Brophy (Akinola 90’)
SUBS: Sargeant, McAnuff, Dayton, Thomas, Akinola, Wright
BRADFORD: O’Donnell, P.O’Connor, A O’Connor, Donaldson, Samuels (Mottley-Henry 81’), French, Clarke (Scales 60’), Watt, Staunton (Richards-Everton 55’), Sutton, Wood
SUBS: Hornby, Longridge, Ismail, Cousin-Dawson
BOOKED: French, A O’Connor, Staunton
REF: Sam Allison