Just my personal opinion, but I really think people who have a concern about whether to pray to God or not for a win are making prayer into too big of a deal, when it should just be a normal conversation with God.
Once again, you can bring ANY prayer to God. It doesn’t have to always be some big, lofty, serious request. God is your friend, you take everything to God. You just have to accept it if he says No. If somebody is going to be angry at God because they prayed for their team to win and the team lost, then that person has a problem. But for many of us, praying for the team to do well is just a normal thing to do, like praying for God to help us do well on our job today.
Anyway, it’s your choice what you want to pray for or not, others will make their own choices.
Have a nice day