Joseph Charles Grzenda (June 8, 1937 – July 12, 2019) was an American professional baseball relief pitcher. He played in Major League Baseball (MLB) for eight seasons (1961; 1964–1967; 1969–1972) for the Detroit Tigers, Kansas City Athletics, New York Mets, Minnesota Twins, Washington Senators and St. Louis Cardinals. Born in Scranton, Pennsylvania, he stood 6 feet 2 inches (1.88 m) tall and weighed 180 pounds (82 kg). His professional career lasted for 20 seasons (1955–1974) and included 492 appearances in the minor leagues.