Independent (1892) Class A (1894) Independent (1895, 1898–1899) Class D (1901) Class B (1901–1911, 1916–1917, 1920–1921) Class D (1922–1932) Class B (1933) Class A (1934–1937)
The Rock Island Tri-Cities played in the only season of the Eastern Iowa League in 1895, but were expelled from the league on June 14, 1895 (along with the Clinton Bridegrooms) with a 14–18 record.[6] In 1898, playing in the Western Association, the Islanders disbanded after two other teams had already disbanded that season, causing the Western Association to disband on June 26, 1998. In 1899, the Islanders were in first place (28–8), when the Western Association disbanded on June 16, 1899.[7] All the early Rock Island teams were managed by Rock Island native Harry Sage.[2][5]
The Rock Island Islanders won two Illinois-Indiana-Iowa League Championships in an era without playoffs, finishing 84–47 in 1907 and 90–48 in 1909.[8][9] Both teams were managed by Jack Tighe.[10][5]
After the Islanders finished last, with a record of 58–79, in the 1911 Illinois-Indiana-Iowa League. Rock Island was replaced by the Springfield Senators in the 1912 Illinois-Indiana-Iowa League.[5][11]
With the Rock Island and Davenport hosting teams in this era, in 1914 a third Quad City minor league team was added. The 1914 Moline Plowboys joined the Illinois-Indiana-Iowa League. Moline claimed league championships in 1915, 1921 and 1937. A fourth area minor league team, the nearby Kewanee Boilermakers were members of the Central Association from 1908 to 1913 and 1948 to 1949.[5]
The Rock Island Islanders briefly regained a franchise in 1914, when the Central Association member Ottumwa Packers moved to Rock Island on July 17, 1914. However, on July 24, 1914, after a few games in Rock Island, the franchise was forced to play the remainder of the season in Galesburg, Illinois after the Illinois-Indiana-Iowa League ruled against having a league team placed in the territory of the Moline Plowboys. The team played as the Galesburg Pavers in their remaining 1914 games. Galesburg did not return to play in 1915.[12][5]
In 1916, the Rock Island Islanders rejoined the Illinois-Indiana-Iowa League, playing alongside the Moline Plowboys and Davenport Blue Sox.[13][14] Rock Island was in fourth place (36–25) when the Three-I League halted play on July 8, 1917.[15] The league did not return in 1918, with the nation invested in World War I, but resumed in 1919 without Rock Island. The Islanders rejoined the league in 1920 and 1921, finishing in last place in both seasons. Overall, the Islanders played in the Illinois-Indiana-Iowa League from 1901 to 1911, 1916 to 1917 and 1920 to 1921.[2][5]
The Rock Island Islanders and Davenport Blue Sox faced each other in the Mississippi Valley League Championship series in 1932 and 1933. Rock Island won the 1932 Championship, defeating Davenport in six games. Davenport defeated the Islanders to win the 1933 Championship in the final season of the Mississippi Valley League.[3][22]
After joining the Western League in 1934,[23] On July 17, 1935, the Islanders had a record of 19–46 in the Western League standings when the franchise folded .[24] In 1936, the Omaha Robin Hoods of the Western League moved to Rock Island on August 18, 1936 after their ballpark was destroyed by fire.[25] The franchise was kwown as the "Rock Island Islanders" for the remainder of the 1936 season.[26][5]
The Rock Island Islanders played their final season in 1937, as both Rock Island and the Davenport Blue Sox teams were both members of the Western League in 1937.[27] The Rock Island Islanders franchise folded permanently on July 7, 1937.[28] The Western League itself then folded after the season.[3][5]
Rock Island captured league championships in 1894, 1899, 1907, 1909 and 1932.[5]
Rock Island has not hosted another minor league team.[5] Today, the Quad Cities is represented in minor league baseball by the Quad City River Bandits, based in neighboring Davenport, Iowa, with the franchise beginning Midwest League play in 1960.[5]
The ballparks
Rock Island teams, until 1917, played home minor league games at the 12th Street Grounds. The ballpark was located on the North end of 12th street, near the railroad tracks in Rock Island, Illinois.[29]
Beginning in 1920, the Islanders hosted minor league home games at Douglas Park. The historic park and ballfield are still in use today.The Quad City 76ers Semi-Pro team is the primary tenant. Notably, Douglas Park also was the site of the first National Football League game on September 26, 1920, hosted by the Rock Island Independents. Douglas Park is located at 18th Avenue & 10th Street, Rock Island, Illinois, 61201.[1][30][31]