Circle changeup the index finger on the seam of the ball and the thumb on the side of the ball to "choke" the ball. According to his autobiography, Nolan Ryan also developed his own circle changeup to add another off-speed pitch without having to throw a slider (as sliders are believed to more frequently cause injuries). Circle changeup In baseball, a circle changeup is a pitch thrown with a grip that includes a circle formation, hence the name circle changeup. The circle is formed by making a circle with the index finger, holding the thumb at the bottom of the ball parallel
Speed-ball Speed-ball Speed-Ball is a racquet sport invented in Egypt in 1961 by Mohamed Lotfy for the training of beginner tennis players. Today it is a sport in its own right, enjoying popularity not only in Egypt but in other countries. Several of these countries make up the International Federation of Speed-Ball (FISB). A hollow ball in latex revolves around a metallic mast (1,70m high) which is linked by a nylon thread (fishing thread type) of 1,70m length. The thread is knotted to the mast by a loop or a plastic ring freely revolving around a reel. The mast is fixed