They pray to God ask for help to have a good performance during the match to win. I believe God involves in all aspects of our lives, not just in soccer and other sports. So that is normal if you always pray to God before you doing something because you want God to guard you, protect you, and give you the best.
and also the main reason for praying is their safeties , no injuries will occur and they will all go home safe Win or Lose.
because about the desire to win , it is not God to decide and this is about the team performance and the reaction of the opponent .