Bath must march to a different drum when they face Northampton Saints in Saturday’s Premiership Final. With the match a sellout, thousands of Northampton fans in green, gold and black are expected to descend on Twickenham. The strains of “When the Saints” are bound to ring out loudly. Bath must blot out that insistent beat, chose their own rhythm and play their own game to have a chance of beating the favourites.