Athletes at all levels know agility when they see it: think (NB BASEBALL ATHLETE) sprinting, diving, catching, getting up and firing a frozen rope to second base all in one fluid movement of athleticism.
"Agility" is officially defined as the "power of moving quickly and easily; nimbleness, and the ability to think and draw conclusions quickly." I define agility as the ability of the body and mind to react quickly with efficient and graceful movement.
Here's why improving your agility will make you a better athlete:
Quicker reaction time. Training and improving your agility means decreasing the amount of time it takes for your mind and body to react to certain situations while competing. Agility often determines who scoops up the loose fumble or who gets a glove on the hard hit ground ball up the middle. Hustle and heart are crucial, but how do those attributes help if you don't have the agility to perform?
Injury prevention. If we can train our bodies to move gracefully and efficiently in numerous ways, it'll be ready to move with grace when put into a potentially dangerous position. For example, if a defender lays a dirty slide tackle on someone they're much more likely to move their body in a way that avoids dangerous contact if they've put hard work into agility training. Strength and stability will go far for preventing injury when facing harmful contact, and should not be ignored. But agility can help athletes avoid such contact completely.