Novak Đoković claiming the Eastern Orthodox Christian Faith all the way to the top

Tennis at the Paris 2024 Olympics:

Serbian brother and tennis extraordinaire Novak Đoković claiming the Eastern Orthodox Christian Faith all the way to the top of the tennis world.

Passed down to future generations without additions and without subtractions, Eastern Orthodox Christianity was established and taught by Jesus Christ and his Apostles—in this context, "Orthodox" meaning "following right or correct beliefs" and "Orthodox Church" meaning "right teaching," the essence of the word "Orthodox" being derived from the Greek words orthos ("right") and doxa ("teaching").

And yes, the Holy Cross is part of the Faith:

1 Corinthians 1:18: "For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God."