- Joannes Stadium was built in 1929.
- In 1935 Joannes hosts an exhibition game between the St. Louis Browns and Pittsburgh Pirates. Roger Hornsby played first base, Honus Wagner coach the Pirates. Over 3,500 attend the game.
- 1950’s-60’s-Joannes Stadium was home to the Green Bay Blue Jays, a Class D Minor League affiliate of the Cleveland Indians and Brooklyn Dodgers. Popular players of the time include Frank Howard, who in 1958 hit 37 home runs and knocked in 119. Howard went on to become the 1960 National League Rookie of the Year. In 1959 George Scott knocked in an amazing 155 and did not make the All-Star team. Other well known’s of the time Andy Pafko of Boyceville, Wisconsin, went on to play for the World Champion Milwaukee Braves.When Dodgers move to Los Angeles, the team is moved.
- 1970’s-August 2006-Joannes was home to a number of local teams including the Green Bay Blue Ribbons, Green Bay Sultans and the Green Bay Billy’s.
- September 19, 2006-City Council awards lease of Joannes Stadium to the Northwoods League and Titletown Baseball Group. TTBG is awarded an Nortwoods League expansion team to begin play in 2007.
- September 20, 2006-Titletown Baseball Group begins work and improvements to Joannes Stadium.
- Spring 2007-Construction begins on Joannes renovation project #1, a 4,084 square foot Fan Deck. The Leinies Northwoods Deck will be located in the right field corner creating a unique viewing and entertainment option for the fans.
- June 4, 2007 Bullfrogs first home game versus the Battle Creek Bombers.