What is the oblique sling, and how does it affect me as an athlete? Are you a baseball player and want to throw harder and hit the ball further? Or are you a volleyball player that wants to increase arm speed and hit harder? Or are you a quarterback that wants to throw with a little more mustard? Your ability to do so is dependent upon your ability to load and create length through your oblique sling. This sling is our bodies personal whip. Understanding how to use it is a insanely effective way to improve sport performance.