I recently saw a couple of twitter posts claiming that Nelson Figueroa is the “All-Time” Minor League Strikeout King with 1,505 minor league strikeouts. Figueroa was a fine Minor League star of the modern era, but he isn’t even in the top ten all-time in terms of Minor League strikeouts.
The misconception that Figueroa is the minor league strikeout GOAT is mainly due to the fact that Baseball Reference’s minor league stats prior to 1946 are woefully inadequate. The actual all-time Minor League Strikeout King is either Oyster Joe Martina or George Brunet, depending on whether you consider the summer Mexican League a “minor league.”
According to my mid-1980’s copies of Minor League Stars Volumes I and II published by SABR, Oyster Joe struck out 2,770 minor leaguers in a pro career that ran from 1910 to 1931, mostly for the Beaumont Oilers in the Texas League and the New Orleans Pelicans in the Southern Association. By today’s standards, both leagues would probably classify as AA with the Southern Association being the better circuit during the years Martina played in them.
Oyster Joe spent only one season in the major leagues, as a 34 year old rookie for the 1924 World Champion Washington Senators. He went 6-8 with a 4.67 ERA. His main utility was eating up 125.1 IP, fifth best on the team, and he pitched one shutout inning in the World Series against the New York Giants.
George Brunet went 69-93 across parts of 15 major league seasons, most notably for the California Angels in the late 1960’s. When his major league career ended at age 36, he pitched in AAA until age 38 and then pitched in the Mexican League until age 49. He last pitched professionally in 1984.
Brunet struck out 3,175 minor league batters, well more than 1,000 of those in his last 11 or 12 seasons in Mexico.
Another minor leaguer worth mentioning here is Kewpie Dick Barrett (he was only 5’9 and 175 lbs and even then that was small for a right-hander). Barrett struck out 1,866 Pacific Coast League batters in the 1930’s and 1940’s, when the PCL was the best of the what we would now call the AAA leagues. Most of Barrett’s major league career took place between 1943 and 1945 between the ages of 36 and 38, when most of the best major league players were serving in the military.
Barrett’s 1,866 Ks in the PCL are the most by a pitcher in a single top minor league, what we would now call AA and AAA.