American football as we know it was regulated and codified by Ivy League schools: Harvard, Yale, Columbia, Rutgers and Princeton. The game is a 19th century variant of both rugby and soccer. Footballs are made of leather, high-quality rubber or plastic materials, or a combination of the materials. You can fix a punctured football in a few simple steps, and have the ball back in play in a matter of minutes. Keep a football repair kit with you at all times, to ensure your game never needs to called due to a punctured football.
Immerse your football in a bucket of water and turn it slowly. Look for the place where a steady stream of small air bubbles is emerging from your ball. This is where the football is punctured.
Fill your repair syringe with ball sealant. Insert the tip of the syringe into the ball valve. Depress the syringe, emptying its contents into the ball.
Insert your football pump tip into the ball valve. Pump a few times to replace any lost air in the ball. Pound the ball vigorously against a grassy patch of ground. Focus your pounding specifically on the area where your ball has been punctured.
Continue with your game, as the ball is repaired and ready for use.