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
Jimmy Doolittle first quantities of 100 octane aviation gasoline. High octane fuel was crucial to the high-performance planes that were developed in the late 1930s. In 1931, Doolittle won the first Bendix Trophy race from Burbank, California, to Cleveland, in a Laird Super Solution biplane. In 1932, Doolittle set the world's high speed record for land planes at 296 miles per hour in the Shell Speed Dash. Later, he took the Thompson Trophy race at Cleveland in the notorious Gee Bee R-1 racer with a speed averaging 252 miles per hour. After having won the three big air racing trophies of the