Match ends, Oldham Athletic 0, Doncaster Rovers 1.
Genseric Kusunga's late own goal booked Doncaster's place in the third round of the FA Cup as they defeated Oldham.
Doncaster's Richie Wellens and Oldham top scorer Jonathan Forte both saw first-half efforts saved.
Visiting keeper Sam Johnstone denied Danny Philliskirk and Doncaster's Theo Robinson's saw his shot well saved.
Rovers broke the deadlock with four minutes to go as keeper Paddy Kenny dived to punch clear a cross but the ball cannoned back off Kusunga and in.
Oldham Athletic boss Lee Johnson told BBC Radio Manchester:
"We have lost two home games in the last two cup encounters that we probably shouldn't have, and I'm disappointed.
"We have ourselves in a good league position by doing things we didn't do today - running and hustling.
"Our league form is very good over a sustained period of time, but I don't know why the psychology has dropped off a little bit today. I couldn't explain it. If I could, I would be a better manager than I am now."
- 14JohnsonSubstituted forMorgan-Smithat 89'minutes
- 15WinchesterSubstituted forPoleonat 69'minutes
- 11ForteBooked at 84mins
- 22WabaraBooked at 81mins
- 26CoppingerBooked at 53minsSubstituted forFurmanat 67'minutes
- 23BennettSubstituted forForresterat 76'minutes
- 21De Val Fernandez
- Lee Collins
- Shots on Target
Second Half ends, Oldham Athletic 0, Doncaster Rovers 1.
Attempt missed. Liam Kelly (Oldham Athletic) right footed shot from outside the box is just a bit too high.
Attempt missed. Jabo Ibehre (Oldham Athletic) right footed shot from the left side of the box misses to the right.
Attempt missed. Theo Robinson (Doncaster Rovers) right footed shot from the right side of the box is just a bit too high.
Paul Keegan (Doncaster Rovers) wins a free kick in the defensive half.
Foul by Genséric Kusunga (Oldham Athletic).
Paul Keegan (Doncaster Rovers) wins a free kick in the attacking half.
Foul by Jabo Ibehre (Oldham Athletic).
Substitution, Oldham Athletic. Amari Morgan-Smith replaces Daniel Johnson.
Corner, Oldham Athletic. Conceded by Luke McCullough.
Own Goal by Genséric Kusunga, Oldham Athletic. Oldham Athletic 0, Doncaster Rovers 1.
Attempt missed. Harry Forrester (Doncaster Rovers) right footed shot from outside the box is high and wide to the right.
Corner, Doncaster Rovers. Conceded by Brian Wilson.
Jonathan Forte (Oldham Athletic) is shown the yellow card.
Enda Stevens (Doncaster Rovers) wins a free kick in the defensive half.
Foul by Jonathan Forte (Oldham Athletic).
Attempt saved. Theo Robinson (Doncaster Rovers) left footed shot from the centre of the box is saved in the bottom left corner.
Reece Wabara (Doncaster Rovers) is shown the yellow card.
Joseph Mills (Oldham Athletic) wins a free kick in the defensive half.