Caitriona Balfe, Graham McTavish and Sam Heughan have known each other since they first appeared in the first episode of Outlander. However, despite appearing in two series with one another, the Claire Fraser actress had to give a warning to Graham about the highlander star before they began filming Men in Kilts.
Speaking in an exclusive interview with Express.co.uk, Graham revealed Caitriona warned him how competitive Sam could get.
It seems this was an important warning as the pair went on to compete in a number of sporting events on their travel series.
Unfortunately for Sam, things didn’t go his way as he ended up losing out to Graham as they took on hammer throwing, golf and rugby.
Graham explained: “He is quite insanely competitive, Caitriona [Balfe] actually warned me before I started doing it.
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“And then I beat him at the golf.”
Graham added he had “unbridled glee” at watching his co-star face the cold waters as he watched on from a warm camper van.
The series has been renewed for a second season and Graham is keen to explore more of Scotland as well as take the show abroad.
“The story that we want to tell really is a story much bigger than Scotland actually, I think it’s discovered story and that story extends to many parts of the world, you know, Canada, New Zealand, Australia, the United States, South Africa, all over the world,” he said.