1. Be ostentatious! Sure, you could just stand there and pray silently -- but what good would that do? No one would know you're praying, and that would make your prayer worthless.
2. Use as many techniques as possible to drill your point home: kneel, make the sign of the cross, point at the sky. Do it all!
3. Never pray next to a praying, opposing player because this would make heads explode. This is strictly forbidden on TV. One violation of this bedrock rule and you'll be sent down to the minors for the entire season.
Now, go forth and pray, young baseball Christian soldiers. Your stupidity will ensure that your soul shoots shoots into heaven when you die. And that's what the game of baseball is all about.