In 1944 Feldman was 9th in the NL with 40 games pitched.[1] In 1945 Feldman was 6th in the NL in games started (30) and shutouts (3), and 9th in innings (217.7) and batters faced (933).[1] He was 12–13, with a 3.27 ERA.[1]
In 1946, Feldman joined what became a total of 27 major league players, including Max Lanier, Mickey Owens, Vern Stephens and George Hausmann, in jumping to the "outlaw" Mexican League. Feldman signed with the Azules de Veracruz.[5] The following year he played in Havana, Cuba. In 1949 he pitched for a while in the Provincial League for Sherbrooke, Quebec, and then moved to San Francisco where he pitched his last two seasons with the San Francisco Seals, going 6–9 with a 4.31 ERA in 1949 and 11–16 with a 4.38 ERA in 1950. He retired at the end of that season.[citation needed]
Feldman was 8th lifetime in ERA of all Jewish major league pitchers through 2010, behind among others Sandy Koufax and Ken Holtzman.[6]
After baseball
Feldman was very active in the local semi-pro league.
On March 16, 1962, at age 42, Feldman died of a massive heart attack while tending his boat at Lake Tenkiller in nearby Oklahoma. He is buried at Rose Lawn Cemetery, Fort Smith, Arkansas.[1]
^ abMcKelvey, G. Richard (2006). "Ace Adams and Harry Feldman". Mexican Raiders in the Major Leagues: The Pasquel Brothers Vs. Organized Baseball, 1946. McFarland. ISBN9780786425631.