Christian Hunter Greene (born August 6, 1999) is an American professional baseball pitcher for the Cincinnati Reds of Major League Baseball (MLB). The Reds selected him second overall in the 2017 MLB Draft. Greene made the Reds' Opening Day roster in 2022. In only the second game of his major league career, he set an MLB record by throwing 39 pitches with a velocity of at least 100 mph (160 km/h).