An electrocardiogram (EKG or ECG) is a test that checks for problems with the electrical activity of your heart. An EKG shows the heart's electrical activity as line tracings on paper. The spikes and dips in the tracings are called waves. The heart is a muscular pump made up of four chambers .
In the official rules for Major League Baseball, it is stated that the outfield fence should be at least 250 feet from home plate. A distance of 325 feet or more along the foul lines and 400 feet or more to center field has since become mandatory for any new stadiums.
The skinned infield must extend at least 3 feet past the foul line before grass starts and backstops must be a minimum of 25 feet from the back of home plate. Softball umpires will enforce these rules. Baseball is more lenient on these measurements.