Mansfield Town 1-4 Oldham Athletic
Oldham scored four second-half goals to beat Mansfield and set up an FA Cup third-round tie with Liverpool, whom they
The hosts were ahead at the break after Ross Dyer headed home from six yards.
But Oldham hit back, Danny Philliskirk curling a free-kick into the top corner before Jonson Clarke-Harris fired in.
A Philliskirk corner saw Matteo Lanzoni head in before Adam Rooney netted a penalty after Stags defender John Dempster was sent off for handball.
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Oldham manager Lee Johnson told BBC Radio Manchester:
"I'm delighted for the lads mainly. Of course I'm delighted personally, but for the lads more importantly.
"Over the two games, it was tough. They [Mansfield] a dogged side and we had to work hard to get our football out.
"The second half was a monumental performance by the boys and I'm so pleased for them, with the prize of now going to Anfield."