poriomania (pÅrâ³ Ä-Å-mÄnâ² Ä-Ä) [Gr. poreia, walking, + mania, madness]
1 Refers to the bowler's motion that ends with the start of the delivery. 2  arm-swing: The arc of the bowling arm and hand from the swing to the backswing. 3  arrows: Targeting arrows that appear on the lane 12 to 16 feet beyond the foul line. 4  Also called darts.
Sinker Alternative. 1  1. Hold the ball the same way as for a 2-seam fastball. 2  2. Move your thumb right from bottom of ball for righties and left for lefties. 3  3. Release the ball at a lower angle than a normal pitch with speed.  4. Flick your wrist down. Or, create topspin to get greatest break.