And Eric Liddell, the subject of the "Chariots of Fire" film was himself a devout Christian, a missionary,as well as being an international athlete and rugby player. He refused to run on a Sunday in his best event, the 100metres, in the Paris Olympics of 1924.
And here in Edinburgh,we have the "Eric Liddell Centre" housed in a de-consecrated church on a road junction known as "Holy Corner" as there are (were) churches on each of the 4 corners of the junction!