Gary Melvin Kroll (born July 8, 1941 in Culver City, California) is an American former Major League Baseball pitcher who played for four seasons. The 6 ft 6 in (1.98 m), 220 lb (100 kg) righthander played for the Philadelphia Phillies in 1964, the New York Mets from 1964 to 1965, the Houston Astros in 1966, and the Cleveland Indians in 1969. As a rookie pitcher in 1964, Kroll committed a league-leading four balks in just twenty-four innings pitched.

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