Grab a friend or teammate and try this drill today.  When your legs are screaming and sweat is dropping on the floor, remember that your competition probably did one more rep.  Begin by facing each other four to six yards apart.  One partner takes a knee and other begins in an athletic position.  The individual in the athletic position (aka Reactor) centers themselves between two cones spaced 5 to 7 yards apart, the partner on a knee rolls a ball in random order to the outside of the cones.  The reactor uses their outside hand to retrieve the ball and toss it back with accuracy.  The reactor then returns to the start position as quickly as possible.  Each roll is one rep.  If the reactor can grab the ball and resume start position comfortably, increase distance between cones, decrease time between rolls, or increase pace of ball being rolled.