Dennis John Bennett was an American professional baseball starting pitcher who played Major League Baseball (MLB) for the Philadelphia Phillies, Boston Red Sox, New York Mets and California Angels over seven seasons (1962–1968). Bennett batted and threw left-handed, stood 6 feet 3 inches (1.91 m) tall, and weighed 192 pounds (87 kg). He was the older brother of Dave Bennett, a right-handed pitcher who appeared in one MLB game as Dennis's 1964 Phillies teammate.