This is what the Bible says:
Jesus instruction on prayer in Matthew begins this way:
Whenever you pray, do not be like the hypocrites, because they love to pray while standing in synagogues and on street corners so that people can see them. Truly I say to you, they have their reward. But whenever you pray, go into your room, close the door, and pray to your Father in secret. And your Father, who sees in secret, will reward you (Matthew 6:5-6).
It says in James, "Religion that is pure and undefiled is to visit widows and orphans in their affliction and to keep oneself unstained from the world."
Micah 6:8 says "He has showed you, O man, what is good. And what does the Lord require you but to do justice, to love kindness and to walk humbly with your God?"
I just don't see what part of scoring a touchdown in a big game, and knowing all the cameras are on you and pointing to the heavens and writing scripture on your face has anything to do with "pray to the Father in secret" or "walk humbly with your God."
To me it says, hey, everybody look at me. Me Christian, you not.
For true Christian ACTS, read about the life of NFL RB Warrick Dunn. He doesn't have to tell everybody how Christian he is. He just lives it.