Halifax start the week in third place in the Championship, despite Sunday’s 28-28 draw with Doncaster at the Shay.
The Dons came back from 28-6 down with half an hour to play to snatch a share of the points through Paul Cooke’s last-second try.
It leaves Fax still in third, but level on points with fourth-placed Leigh and just three clear of fifth-placed Batley, who visit the Shay next Sunday (3.0).
Boss Karl Harrison identified a mistake from captain Scott Murrell midway through the second half as the turning point in a contest that Fax looked to have under lock and key.
“Why did it happen? Inability to catch a ball, inability to make a good decision,” said Harrison.
“From Scott’s mistake midway through the second half, Doncaster had 80 plays, we had 37.
“At the end, we were out on our feet because of that.
“We played well until that point, we really did.
“One mistake changed the game.
“We had the game won, we were cruising, we should have won by 40 points.
“It’s a loss to us, it’s not acceptable and it’s not good enough. I’m beyond disappointed.
“We have people continually making the same mistakes.”