Bamber Bridge were left to rue a late penalty miss as they were defeated away at Mossley.
A goal either side of half time saw Mossley take a deserved 2-0 lead, before Danny Mahoney bundled the ball home after 75 minutes.
Brig had a great chance to equalise in the final minute but Mahoney failed to convert from the penalty spot.
Despite Mossley being deserved victors, it was the visitors who started the better.
Sam Joel had a header cleared off the line and Brett Ormerod fired wide from inside the box.
Mossley opened the scoring against the run of play, Michael Fish escaped his marker and finished well past a helpless Lee Dovey.
Just before half-time, Stu Vasey shot wide.
In the 53rd minute, Sam Robinson volleyed over for Mossley and minutes later, Andy Keogh headed home past Dovey.
Brig pulled a goal back in the 75th minute as Mahoney swept home a Jamie Milligan free-kick.
Brig should have had a penalty when Caldon Henson hacked down Chris Marlow but the claims were waved away.
Brig were awarded a spot kick in the 92nd minute, Michael Thomas handling whilst controlling the ball.
The usually reliable Mahoney stepped up but he was denied by Liam Flynn who saved a relatively poor penalty diving to his right.
Bamber Bridge: Dovey, Mahoney, Green, McKenna (c), Alexander, Booth, Thompson (Marlow 63), Vasey (Moss 75), Ormerod, Joel (Linney 63), Milligan.
Subs not used: None