Here's a story about an active LDS who is the best woman's soccer coach, Anson Dorrance. I put it in BYU soccer because BYU's in the tournament he owns. 38 appearances and 21 natties.
What is interesting is that he fosters the "cauldron of competitiveness" at each and every practice. That's his core model, which could be transferred to any sport.
Read this about his life history.