The league features twenty-five teams in Ontario, one in Quebec, and one in the Akwesasne (which straddles the two aforementioned provinces and New York) that annually play a 20-game schedule and four rounds of playoffs for the J.

After the conclusion of the playoffs, a league champion represents the OJBLL at the Founders Cup National Junior B Championship.

At the national level, the OJBLL has been extremely dominant at the Founders Cup tournament only losing out to other leagues a handful of times in the last 40+ years.

In the past few years, the league has expanded to Oakville, Windsor, London, Cornwall, Hamilton, Niagara, Markham, Orangeville, and Welland.

The Buzz went undefeated at the Founders Cup and crushed the hopes of the host Windsor AKO Fratmen, beating them by a score of 10–4 in the final.