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
Drone Racing League 16 pounds of thrust with a top speed of around 90 MPH. Unlike the Racer2, the Racer3 has a hard shell or canopy to protect it from crashes. DRL brought a fleet of identical 600 Racer3 drones to every race in 2018. In July 2017, Ryan Gury and his team of drone engineers designed and hand built the DRL RacerX, setting the Guinness World Record for the Fastest Ground Speed by a Battery-powered Remote-controlled Quadcopter. Weighing less than two pounds, the RacerX hit a top speed of 179.6 miles per hour, the official record-breaking speed was recorded as 163.5 miles