Apparently not, as the League One side triumphed 3-2 after an absorbing and aggressive encounter, which left last season's finalists Liverpool knocked out of the FA Cup in the fourth round.
The draw immediately following the final whistle paired the victorious side with the Reds' Merseyside rivals Everton, which otherwise would have been a repeat of last season's semifinal—had Liverpool beaten the team from two leagues below them.
Matt Smith gave the home team a fast start and a lead after two minutes with a towering header before Luis Suarez, captain for the day, passed home the equaliser. Right on halftime Smith doubled his tally for the day and Oldham made it three with a looping header from full-back Reece Wabara straight after the break.
Joe Allen scored with 10 minutes left to ensure the home fans had an anxious wait for the final whistle—but the weekend of giant-killing continued as Oldham defended their lead to go through, and knock out the Reds.
Here are Liverpool players' ratings from the match.