William Walker Cooper
- Bats Right, Throws Right
- Height 6' 3", Weight 210 lb.
- High School William Chrisman High School
- Debut September 25, 1940
- Final Game September 20, 1957
- Born January 8, 1915 in Atherton, MO USA
- Died April 11, 1991 in Scottsdale, AZ USA
During World War II, Cooper entered the Navy in May 1945. While he was still in the Navy, the New York Giants paid $175,000 to buy his contract. He was discharged in April 1946 and had his best big league season for the Giants in 1947, hitting .305 with 35 home runs.
Cooper was traded to the Cincinnati Reds in June 1949 and less than a month later, on July 7th, set the Reds record for most productive game at the plate. In that game against the Chicago Cubs, he had six hits: three homers, two doubles, and a single (15 total bases and 10 RBIs). He was the first only major league player to collect six hits and ten RBIs in a game until joined by Anthony Rendon on April 30, 2017.
Cooper later spent time with the Boston Braves, Milwaukee Braves, Pittsburgh Pirates, and Chicago Cubs before ending his career as a player/coach with the Cardinals in 1957. He was also later a member of the Kansas City Athletics coaching staff in 1960.
Walker was the brother of Mort Cooper, father-in-law of Don Blasingame and grandfather of Kent Blasingame. His playing longevity and career hitting/catching statistics closely parallel those of later Cardinals star catcher Ted Simmons.
- 8-time NL All-Star (1942-1944 & 1946-1950)
- 20-Home Run Seasons: 2 (1947 & 1949)
- 30-Home Run Seasons: 1 (1947)
- 100 RBI Seasons: 1 (1947)
- Won two World Series with the St. Louis Cardinals (1942 & 1944)