With the fifth round of the Challenge Cup set to get underway on Friday night, fans will be looking at all eight ties and wondering where the best chance of an upset is.
The competition has had two real fairytale stories in recent years with Castleford and Hull KR making it to the final - and even last year, Leigh Centurions stunned everyone by The three biggest chances of a Challenge Cup upset this weekend
With the fifth round of the Challenge Cup set to get underway on Friday night, fans will be looking at all eight ties and wondering where the best chance of an upset is.
The competition has had two real fairytale stories in recent years with Castleford and Hull KR making it to the final - and even last year, Leigh Centurions stunned everyone by