Galopin Des Champs or Fastorslow? Alan Sweetman assesses where the momentum lies in Irish Gold Cup clash

Momentum is the keyword in weighing up the likely outcome of an intriguing rematch between last year's winner, Cheltenham Gold Cup hero Galopin Des Champs, and his two-time Punchestown nemesis Fastorslow in the Paddy Power Irish Gold Cup.

In Newtonian mechanics, momentum is measurable. In a sporting context, it's a matter of perception.

At Christmas, I tried to get to grips with the puzzle of Leopardstown's Savills Chase. In assessing the private rivalry between Galopin Des Champs and Fastorslow, I concluded that "momentum was with Fastorslow".