John Frederick Blake
- Bats Both, Throws Right
- Height 6' 0", Weight 180 lb.
- School West Virginia Wesleyan College
- High School Greenbrier Military School
- Debut June 29, 1920
- Final Game September 26, 1937
- Born September 17, 1899 in Ansted, WV USA
- Died October 31, 1982 in Beckley, WV USA
"One day in 1924, a young pitcher with the Cubs, John Fred Blake was sitting around a Chicago hotel room talking with his cronies... the talk turned to Prohibition, bootleggers and revenue officers... one of the men began to refer to Blake as 'Sheriff', though for no observable reason." - Lee Allen
Sheriff Blake pitched ten years in the major leagues, mostly with the Chicago Cubs in the 1920s. He was in college in 1920, and made his debut in June 1920 with the Pittsburgh Pirates. After that, he did not come back until 1924 working in a myriad of roles with the Cubbies. In 1928, he put together his finest season, pitching 34 games with an ERA of 2.47, a record of 17-11, and an NL best 4 shutouts among his career best 16 complete games. At the end of his personal best, he was struck down with an injury to his pitching hand, affecting the grip of his bread and butter curveball. He was able to go 14-13 on the Cubs' pennant-winning 1929 team, his last season with better than 200 innings. But after the 1931 season, split as a swingman with the Cubs and Philadelphia Phillies, he was out of the majors until 1937, when he came back for 29 games with both St. Louis franchises at the age of 37.
- NL Shutouts Leader (1928)
- 15 Wins Seasons: 1 (1928)
- 200 Innings Pitched Seasons: 4 (1925 & 1927-1929)
- Gregory H. Wolf: "Sheriff Blake", in Gregory H. Wolf, ed.: Winning on the North Side: the 1929 Chicago Cubs, SABR, Phoenix, AZ, 2015, pp. 24-28. ISBN 978-1-933599-89-2