"I see great things in baseball.  It's our game, the American game.  It will repair our losses and be a blessing to us."  Baseball, as described at the end of the Civil War by poet Walt Whitman, is by far the oldest organized professional sport.  Its development reflects the history of our nation, as well as our increasing technological sophistication.  In this talk, Dr. Porter W. Johnson discusses the application of physical principles to baseball as well as dynamical issues in pitching, hitting, fielding, and running.  In addition, the impact of weather and geography are considered.