Latics had a draw snatched away from them right at the death thanks to a Lee Ndlovu winner in stoppage time.
Unsworth’s team started the game brightly, and were definitely the better of the two sides early on.
Ellis Chapman had a good chance from a corner, he tried his luck from a volley and saw his effort fly just wide of the post.
Boreham Wood came into the game a tad, Femi Ilesanmi’s cross found Ndlovu who attempted an overhead kick, but failed to make contact.
Latics looked to have a great chance when Tollitt hit the hosts on the counter-attack, he was tactically fouled, but the referee played advantage as Reid picked up the ball, before being fouled himself.
The Wood had a golden chance to go ahead just before half–time, Zak Brunt picked out the unmarked Ilesanmi in the area, but the defender could only aim his header straight at Norman.
Latics went in at half-time with the better share of possession and chances.
Oldham came out in the second-half looking bright, Ben Tollitt was the main avenue of Latics attacks.
He cut in from the left-flank and had a shot on goal, finding the wrong side of the near post by a few inches.
The midfielder had an even better chance a few moments later, he cut in again, this time seeing his strike ricochet off the crossbar.
Boreham Wood went a goal up against the run of play when Dennon Lewis’ cross was bundled over the line by Ndlovu.
Latics then threw everything at the home side, Hope was denied after doing well to work his way into the box from the wing.
The equaliser came when Hope found Tollitt in the box with a sweet pass, with the 28-year-old smashing home his shot from 10-yards.
Oldham weren’t settling for a point, and pushed for another goal. Abraham and Hope both pressed Ashmore in the Boreham Wood goal into firing his clearance into them, just for the ball to land in his arms as he recovered.
Latics were dealt a sickening blow in the third minute of stoppage time when George Broadbent fired a cross into the box, with Ndlovu getting the final touch to divert it past Magnus Norman.
Oldham Athletic: Norman, Hogan, Gardner (Rooney 57), Hope, Sheron, Tollitt, Reid (Abraham 67), Kitching, Peck, Chapman, P Clarke.
Subs not used: Hudson, Maynard, Couto.
Attendance: 801 (186)