| No. | Season | No. of teams | Reg. season
games | Start
(reg. season) | Finish
(incl. playoffs) | Regular Season Champion | Robertson Cup Champion |
|---|
| 1 | 1984–85 | 3[d] | 24 | | | St. Clair Shores Falcons(11–7–6) | St. Clair Shores Falcons |
| 2 | 1985–86 | 4[e] | 43–24 | | | St. Clair Shores Falcons(28–12–3) | Detroit Compuware Ambassadors |
| 3 | 1986–87 | 5*[f] | 37–3 | | | Detroit Compuware Ambassadors(24–8–6) | Detroit Compuware Ambassadors |
| 4 | 1987–88 | 6 | 32 | | | Detroit Compuware Ambassadors(24–5–3) | Detroit Compuware Ambassadors |
| 5 | 1988–89 | 8 | 40 | | | Detroit Compuware Ambassadors(30–8–2) | Detroit Compuware Ambassadors |
| 6 | 1989–90 | 8 | 44 | | | Detroit Compuware Ambassadors(42–0–2) | Detroit Compuware Ambassadors |
| 7 | 1990–91 | 8 | 40 | | | Detroit Compuware Ambassadors(30–5–5) | Kalamazoo Jr. Wings |
| 8 | 1991–92 | 8 | 40 | | | Detroit Compuware Ambassadors(29–8–3–2) | Detroit Compuware Ambassadors |
| 9 | 1992–93[g] | 8 | 40 | | | Kalamazoo Jr. Wings(31–6–3–0) | Kalamazoo Jr. Wings |
| 10 | 1993–94 | 10 | 46 | | | Niagara Scenic(27–11–6–2) | Detroit Compuware Ambassadors |
| 11 | 1994–95 | 9 | 44 | | | Detroit Compuware Ambassadors(36–6–2–0) | Detroit Compuware Ambassadors |
| 12 | 1995–96 | 8 | 46 | | | Springfield Jr. Blues(34–7–4–1) | Springfield Jr. Blues |
| 13 | 1996–97 | 8 | 46 | | April 27 | Springfield Jr. Blues(35–10–1) | Springfield Jr. Blues |
| 14 | 1997–98 | 8 | 56 | | April 24 | Springfield Jr. Blues(42–12–2) | Detroit Compuware Ambassadors |
| 15 | 1998–99 | 9 | 56 | | April 19 | Detroit Compuware Ambassadors(39–11–6) | Detroit Compuware Ambassadors |
| 16 | 1999–2000 | 11 | 56 | | April 28 | Texas Tornado(42–12–2) | Danville Wings |
| 17 | 2000–01 | 10 | 56 | | April 27 | Soo Indians(42–11–3) | Texas Tornado |
| 18 | 2001–02 | 11 | 56 | | April 27 | Detroit Compuware Ambassadors(42–9–5) | Detroit Compuware Ambassadors |
| 19 | 2002–03 | 11 | 56 | | April 25 | Pittsburgh Forge(43–9–4) | Pittsburgh Forge |
| 20 | 2003–04 | 21[h] | 56, 24[i] | | May 2 | Texas Tornado(48–6–2) | Texas Tornado |
| 21 | 2004–05 | 19 | 56 | | April 30 | Texas Tornado(42–13–1) | Texas Tornado |
| 22 | 2005–06 | 20 | 58 | September 9 | May 13 | Bozeman IceDogs(48–9–1) | Texas Tornado |
| 23 | 2006–07 | 17 | 62 | September 13 | May 6 | Mahoning Valley Phantoms(47–14–1) | St. Louis Bandits |
| 24 | 2007–08 | 18 | 58 | September 14 | May 5 | St. Louis Bandits(47–9–2) | St. Louis Bandits |
| 25 | 2008–09 | 19 | 58 | September 17 | May 3 | St. Louis Bandits(42–9–7) | St. Louis Bandits |
| 26 | 2009–10 | 19 | 58 | September 11 | May 9 | Wenatchee Wild(45–10–3) | Bismarck Bobcats |
| 27 | 2010–11 | 26 | 58 | September 10 | May 7 | Topeka RoadRunners(43–12–3) | Fairbanks Ice Dogs |
| 28 | 2011–12 | 28 | 60 | September 9 | May 8 | Amarillo Bulls(46–7–7) | Texas Tornado |
| 29 | 2012–13 | 24 | 60 | September 8 | May 13 | Amarillo Bulls(46–7–7) | Amarillo Bulls |
| 30 | 2013–14 | 24 | 60 | September 13 | May 10 | Fairbanks Ice Dogs(45–14–1) | Fairbanks Ice Dogs |
| 31 | 2014–15 | 24 | 60 | September 12 | May 16 | Janesville Jets(49–9–2) | Minnesota Wilderness |
| 32 | 2015–16 | 22 | 60 | September 11 | May 15 | Fairbanks Ice Dogs(49–8–3) | Fairbanks Ice Dogs |
| 33 | 2016–17 | 24 | 60 | September 9 | May 14 | Aston Rebels(46–11–2–1) | Lone Star Brahmas |
| 34 | 2017–18 | 23 | 60 | September 13 | May 14 | Fairbanks Ice Dogs(45–8–4–3) | Shreveport Mudbugs |
| 35 | 2018–19 | 24 | 60 | September 13 | May 14 | Johnstown Tomahawks(47–9–3–1) | Aberdeen Wings |
| 36 | 2019–20 | 23 | 60[j] | September 13 | March 12 | Lone Star Brahmas(42–9–1–1) | Postseason cancelled due toCOVID-19 |
| 37 | 2020–21 | 23 | 60–48[k] | October 9 | June 22 | Aberdeen Wings(51–4–0–1) | Shreveport Mudbugs |
| 38 | 2021–22 | 29 | 60 | September 8 | May 24 | Lone Star Brahmas(38–12–5–5) | New Jersey Titans |
| 39 | 2022–23 | 29 | 60 | September 9 | May 21 | Oklahoma Warriors(44–14–1–1) | Oklahoma Warriors |
| 40 | 2023–24 | 32 | 60 | September 8 | May 21 | Lone Star Brahmas(44–10–3–3) | Lone Star Brahmas |
| 41 | 2024–25 | 35 | 59 | September 13 | May 20 | Bismarck Bobcats(47–10–1–1) | Bismarck Bobcats |
