League One outfit Peterborough are looking to cause a huge FA Cup upset over Chelsea this afternoon, and you can find out how the clash unfolds here on talkSPORT.
Antonio Conte's troops should cruise past their opponents this afternoon, but with plenty of Premier League upsets in yesterday's action, few would rule out a shock result.
The Posh sit eighth in League One and will be high in confidence ahead of kick off, particuarly with the Blues likely to rest a number of key players after the busy festive period.
So are we in for a major shock?