FIRHILL defender Stephen O'Donnell is confident Partick Thistle can get back on track when they bid for Scottish Cup glory this weekend.

Alan Archibald's side suffered a 1-0 Premiership defeat to Aberdeen on Sunday as they missed the chance to close the gap on their fellow top six hopefuls this term.

The Jags will face Hamilton for the third time this season with a fifth round berth up for grabs.

O'Donnell said: "We will get back on the pitch and show people we are good enough to compete with the very best teams in this league.

"We need to pick ourselves up now for the Hamilton game and hopefully we can get a good cup run going.

"It can work both ways with it being a cup game but it's a good chance right away, at home, to get back to winning ways."

It was a case of what might have been for Thistle at the weekend as Adam Rooney's controversial penalty clinched the win for the Dons.

And O'Donnell was frustrated at falling to another league defeat.

"It's a disappointing result," he told ptfc.co.uk.

"Aberdeen are obviously a good side and to get beaten in the way that we did certainly isn't an embarrassment but things could have gone better.

"We've matched them for long periods of the game and we took points from them here last season, so we believed in ourselves. I'm not quite sure what the problem was but it's disappointing going away with no points."