| 1894 | First known boys tennis tournament involving Illinois high schools held in Chicago. |
| 1912 | University of Illinois sponsors first statewide tennis tournament. |
| 1916 | State tournament cancelled on account of wet grounds. |
| 1917-18 | State tournament not held during World War I. |
| 1925 | Final doubles match postponed on account of rain and played later at Chicago. |
| 1929 | State tournament cancelled on account of wet grounds. |
| 1930 | To pare down the number of competitors, IHSAA introduces district qualifying meet; final singles match postponed on account of rain and played later at Elmhurst. |
| 1944 | Final singles match postponed on account of rain and played later at Northwestern University. |
| 1936 | Team trophies awarded for first time, with Winnetka (New Trier) and Rock Island (H.S.) sharing the state title. |
| 1973 | State final tournament moved to District 200 courts in Arlington Heights. |