Wilfred Charles “Sonny” Siebert (born January 14, 1937 in St. Mary, Missouri, United States) is a former Major League Baseball pitcher from 1964 to 1975. He finished with a record of 140-114 and a 3.21 ERA. He threw a no-hitter on June 10, 1966 against the Washington Senators. He was originally drafted simultaneously by the Cleveland Indians and the St. Louis Hawks of the NBA.
He authored a no-hitter in 1966, and was third in the American League in ERA in 1967. Siebert had a 12-10 record in his final full year in Cleveland, in 1968.
Siebert is the last American League pitcher to hit two home runs in one game, accomplishing the feat as a member of the Boston Red Sox on September 2, 1971 against the Baltimore Orioles. On September 11, 1974, he was credited with the win in a 25-inning Cardinal win over the New York Mets. It is the second longest game in innings played in National League history.
He was traded before the 1974 season to the his hometown Cardinals for Tommy Cruz and cash.
Siebert both started and relieved for the Cards, with one of his more memorable efforts coming out of the pen. On September 11, 1974, St. Louis was locked in a 25-inning affair with New York at Shea Stadium. The game ended at 3:13 AM, with Siebert going the final 2 1/3 innings to pick up his eighth victory. The game lasted seven hours and four minutes, as the Cardinals set a National League record by using 26 players in the marathon game. “I got the ball from the longest National League night game in history,” recalls Siebert. “I’ve been offered money for it, but I would never sell it.”