- Dave Koslo spent several years in the Giants organization. He had short stints with New York in 1941 and in 1942 before going off to serve in World War II.
- After the war Koslo came back to lead the NL in starts (35) and losses (19) in 1946.
- Dave had a good year in 1947, going 15-10 with a 4.39 ERA. He started 18 games (out of 35 total games) in 1948 and was 8-10 with a 3.87 ERA.
- Koslo led the NL with a 2.50 ERA in 1949 and had a record of 11-14. In 1950 Dave was 13-15 with a 3.91 ERA.
- Dave was 10-9 with a 3.31 ERA in 1951. He started and won game 1 of the 1951 World Series. Koslo started game six and took the loss.
- Koslo continued to pitch for the Giants through the 1953 season. Dave was sold to the Baltimore Orioles in April of 1954. He split the season between Baltimore and the Milwaukee Braves before closing out his career with the Braves in 1955.
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