How did Jeffery Lionel Magee get his nickname?

Jeffery Lionel Magee, the protagonist of the children's novel "Maniac Magee" by Jerry Spinelli, earned his nickname "Maniac" due to his incredible athletic talent and his fearless nature. After running away from home, he became a local legend in the town of Two Mills, where he displayed extraordinary running abilities, especially when he raced against the best athletes. His daring feats and willingness to confront challenges head-on contributed to his nickname, symbolizing both his speed and the way he tackled life's obstacles.