The Union City Greyhounds became members of the Kentucky–Illinois–Tennessee League in 1935. Their home games were played at Turner Memorial Field in Union City, Tennessee. They lost their inaugural Opening Day game on May 22 to the Portageville Pirates, 3–2, on the road. The Greyhounds got their first win two games later on May 24, defeating the Pirates, 4–2. They ended their first season in second place with a 49–43 record but missed the playoffs having not won either half the league's split season. In 1936, the Greyhounds became an affiliate of the St. Louis Cardinals. They succeeded in winning the second half and posting a full-season record of 73–45, tied with the Paducah Indians for first place. They then met the first-half champion Indians in the playoffs. After Union City won the first game, 6–2, on September 15, Paducah refused to continue the series, claiming the Greyhounds had two ineligible players on their roster. The championship was subsequently awarded to Union City, and Paducah's manager and seven players who refused to play were banned from professional baseball. of the 1942 Greyhounds was inducted in National Baseball Hall of Fame in 1989. Finishing the 1937 season in first place at 73–46, Union City again qualified for the playoffs, but they were eliminated in the semifinals, 3–0, by the Mayfield Clothiers. Union City left the St. Louis organization after 1937 and became and affiliate of the Cincinnati Reds in 1938. In contrast to the previous campaign, the 1938 team finished last of eight teams at 45–85. They returned to the Cardinals organization in 1939, but the team again placed last with a record of 44–82. Slightly improved teams placed sixth at 60–65 in 1940 and fifth at 62–64 in 1941. Having lost some US$3,500 due to low attendance brought on by poor play, Union City announced it would drop out of the KITTY League after their game on June 19, 1942. The Bowling Green Barons were also forced to withdraw, and the remaining clubs voted to discontinue the circuit on June 19. The Greyhounds dedcided against playing their final game after receiving word from St. Louis that their players would not be compensated for the game. The club was last of six teams with a 9–35 record in the abandoned season. Over eight seasons of competition, the Greyhounds accumulated a regular season record of 415–495.
The KITTY League was nonoperational from 1943 to 1945 during World War II. It and the Greyhounds were revived in 1946. With no major league affiliation, Union City opened the 1946 season on May 7 with a 7–3 loss to the Fulton Chicks before a home crowd of 1,230 people at Turner Memorial Field. At the end of the season, the team was seventh out of eight teams at 52–72. The Greyhounds entered into an affiliation with the Cleveland Indians in 1947. The team placed seventh at 51–74. The 1948 team, managed by ex-major leaguer Tony Rensa finished second with a 79–46 record, qualifying for one of four playoff spots. They defeated the Owensboro Oilers, 3–2, in the semifinals before sweeping the Madisonville Miners in four games to win their second KITTY League championship. The 1949 club just missed the postseason with a 65–60 record, placing fifth. Union City severed its ties with Cleveland after the 1949 season and had no affiliation in 1950. They placed seventh at 43–72 in 1950 and sixth at 43–72 in 1951. The 1952 Greyhounds qualified for the playoffs with a fourth-place 63–56 record. They won the semifinals over the Fulton Lookouts, 3–2, but fell in the championship finals to Madisonville, 3–0. In 1953, the team became an affiliate of the Brooklyn Dodgers and changed their name to the Union City Dodgers. After placing last in their first season with Brooklyn, the 1954 Dodgers won the first half title and paced the league with a 76–40 record. Under manager Earl Naylor, they defeated Madisonville, 4–2, to win a third KITTY League championship. The Dodgers played their final game on August 29, 1955, losing to the Mayfield Clothiers, 6–3, in a game that was called after seven innings due to rain. They posted a season record of 50–57, placing fourth out of six teams. The KITTY League did not reform for the 1956 season, and Union City did not field another professional team afterwards. Over their second stretch of 10 years, the Greyhounds/Dodgers accumulated a 587–609 record. Over all 19 seasons, Union City's all-time record was 1,002–1–104.
Season-by-season results
Notable players
Eighteen Union City players also played in at least one game in Major League Baseball during their careers. These players and their seasons with Union City were:
