Rockford Rox

In an era of early baseball, Rockford hosted teams in numerous leagues beginning in 1871.

The Forest Citys, also known as the "Forest City Club," played as members of the 1871 National Association, finishing with a record of 4–21, with Baseball Hall of Fame member Cap Anson on the team.

[2] In 1879, the Rockford White Stockings played in the Northwestern League, where they finished with a record of 13–9.

The Western Association disbanded on June 16, 1899, with the Rockford Rough Riders in 2nd place with a 20–16 record.

[7] Rockford joined the Bloomington Blues, Cedar Rapids Rabbitts, Davenport River Rats, Decatur Commodores, Evansville River Rats, Rock Island Islanders and Terre Haute Hottentots as fellow charter members.

[4] After finishing last with a 48–76 record in 1904, Rockford folded after the season, replaced by the Peoria Distillers in the 1905 Illinois-Indiana-Iowa League.

[8] The 1908 Reds were charter members of the Wisconsin-Illinois League, along with the Fond du Lac Cubs, Freeport Pretzels, Green Bay Tigers, LaCrosse Pinks, Madison Senators, Oshkosh Indians and Wausau Lumberjacks.

The 1947 Rockford Rox joined the reformed Central Association,[15] along with the Burlington Indians, Clinton Cubs, Hannibal Pilots, Keokuk Pirates and Moline A's.

[4][16] The 1871 Rockford Forest Citys played at the Agricultural Society Fair Grounds.The ballpark had no outfield fences, only trees that surrounded the park.

[per local newspapers] The various Rockford clubs of the 1880s and 1890s played at several parks that are difficult to locate precisely.

[per city directories and local newspapers] Some sources give an erroneous location.

15th Avenue Park, which was just east of and adjacent to the main Beyer Stadium, the home of the Rockford Peaches.