To go somewhere to compete (with an opposing team); to go somewhere to attack s.o.; to predict by divination when or how one should go and compete or attack s.o. (ma-).
We are going to compete (against another team) in baseball.
Let's go and attack that person.
Don't always be taking your rooster somewhere to fight.
That person is a real expert at predicting when we should enter a cockfight because our chicken won.