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
Luis Tiant was a response to a drop in his velocity due to a shoulder blade injury. Twisting and turning his body into unthinkable positions, Tiant would spend more time looking at second base than he did the plate as he prepared to throw. In that season, he led the league in ERA (1.60), shutouts (nine, including four consecutive), hits per nine innings (a still-standing franchise record 5.30, which broke Herb Score's 5.85 in and would be a Major-League record low until Nolan Ryan gave up 5.26 hits/9 innings in ), strikeouts per nine innings (9.22), while finishing with a 21–9 mark.