Although I am not Jewish, I always admired Samuel Reshevsky for his strict adherence to his religious beliefs even if it sometimes interfered with his chess. He was also a family man and that was another thing I respected.
In the past I have posted about Henrique Mecking's fight for life and how he was helped by his Catholic faith and the other day I came across an article in the August 18, 2017 issue of Christianity Today titled I'm a Rare Breed: An Elite Chess Player Who’s Open About His Faith,Why I follow Jesus publicly, even when people warn that my career will suffer. The article is by FIDE's currently number 4 rated Wesley So. Wesley So is on Facebook. So also did brief interview in Evangelical Focus in 2017.