Energy of a Football Kickoff

This Friday i was at the Iolani homecoming Football game against Word of Life. While i was sitting in the hot son watching Andrew Skalman set the football on the kickoff tee i realized what he is about to do is what we are talking about in physics this week. The law of conservation of energy states that energy is conserved, so ignoring air resistance the sum of the PE and KE before the ball is kicked should be equal to the sum of PE and KE throughout the flight of the ball. However, when the ball is resting on the tee the ball has no KE because its velocity is zero and very low PE with respect to the ground. At the peak of the ball flight, the ball has very high PE with respect to the ground and a high KE because the ball is traveling foward. So how did the ball get the energy to accomplish it's flight. The answer is work is being done to the system by Andrew Skalman when he kicks the ball. The work he inputs (work=F x delta X) is equal to the sum of PE and KE (TE) at any point after the ball is kicked minus the KE and PE (TE) before the ball is kicked (ignoring air resistance). This proves that the law of conservation of energy holds true even if the sum of KE and PE are not equal at different points of the ball's path because work is being done.