Chris Hall's late equaliser at Molineux earned Oldham an FA Cup third round replay against Wolves.
He headed home Andy Liddell's free-kick 12 minutes from time after Wolves had come from behind to lead.
Paul Warne swept home a finish to put Oldham ahead after 19 minutes, but Seyi George Olofinjana pounced after 35 minutes to level for Wolves.
Craig Davies, on loan from Verona, headed Wolves in front seven minutes later, but Hall earned Oldham a replay.
Wolves manager Mick McCarthy:
"They deserved the draw and they were better than us in the second half.
"I've never had an easy third round ether as a player or manager.
"It is not a distraction and I'm delighted we are in the hat (the draw for the fourth round on Monday)."
Oldham manager John Sheridan:
"The replay is good for us - it's a midweek game and hopefully it will be freezing and raining.
"I used to love the big games - nothing better in my eyes.
"I am really proud of the lads - they came into the game and really worked their socks off."
Wolverhampton: Murray, Little, Breen (Edwards 62), Collins, McNamara, Ricketts (Mark Davies 73), Olofinjana, Henry, Potter, McIndoe (Johnson 84), Craig Davies.
Subs Not Used: Ikeme, Clarke.
Goals: Olofinjana 35, Craig Davies 42.
Oldham: Pogliacomi, Eardley, Haining, Stam, Charlton, Liddell, McDonald (Rocastle 76), Wellens, Edwards, Warne, Wolfenden (Hall 59).
Subs Not Used: Terry Smith, Tierney, Wood.
Booked: Eardley, McDonald.
Goals: Warne 19, Hall 78.
Ref: P Crossley (Kent).