Answer:
No
Step-by-step explanation:
I believe that this is allowed but only if the other players are okay with being in a prayer, hence freedom of religion in the first amendment... but, if all players are not okay with the prayer because they have different religions, then the prayer is not allowed. Having a quarterback go to the announcer booth and lead the prayer there is also not allowed, because not everyone will have the same religion.
Hope this helps!