188BET are challenging our own Mark O'Haire (@MarkOHaire) and Racing Post superstar Mark Langdon (@MarkLangdon) to a punting duel.
Chelsea v Tottenham | Saturday 17:30 | BBC1
Here the the guys discuss their best bets for Saturday's big FA Cup clash from Wembley.
Our own Mark O'Haire leads 34-26 in the series.
Can You Beat The Two Marks? Win A £30 Free Bet
Grab a £30 free bet if you beat both Marks or a £10 free bet if you beat just one of them.