The league's annual showcase was originally scheduled for September 7-9, 2018 in St. Catharines, but the league stated in a release on August 29, 2018 that the "event is postponed to a later date due to the Ontario Hockey Association refusing to provide referees for the event. This may be part of an ongoing dispute with the OHA about the league wanting Junior "A" status, which has since been appealed to the Ontario Hockey Federation.
The president of the OHA responded to the release with the following as part of a statement that was release "The OHA did not refuse to assign officials to the Showcase event but was in the process of endeavoring to assign those officials when the organizer of the event unilaterally postponed it."
- On April 18, 2018 it was announced on the league website that the Ancaster Avalanche would be relocating to the Dave Andreychuk Mountain Arena in Hamilton, Ontario and would be renamed the Hamilton Kilty B's after the former Hamilton Kilty B's who were renamed the Hamilton Red Wings in 2002 and in 2015 moved to Markham, Ontario and became the Markham Royals.
- On May 8, 2018 the Ontario Hockey Association approves the relocation of the Guelph Hurricanes to Cambridge, Ontario. The team will play out of the Galt Arena Gardens for the 2018-19 season. The team was originally known as the Hesper Shamrocks and later Cambridge Shamrocks when they were established back around 1960. The team played in Cambridge until 1982 when they moved to Guelph. It was announced May 11th that the team will be renamed the Cambridge Redhawks. They will replace the Cambridge Winter Hawks who withdrew from the Ontario Hockey Association and by default the Greater Ontario Junior Hockey League after the 2016-17 season.
- The Caledonia Corvairs requested a one-year leave of absence for the 2018-19 season after completion of the 2017-18 season.
- On June 17, 2018 it was announced the Milton Icehawks franchise of the Ontario Junior Hockey League would be moving to Brantford and would take the 99ers name. The future of the present GOJHL team has not been decided but they are planning on staying put for the 2018-19 season pending a meeting with Ontario Hockey Federation officials. Both teams have the same owner.
- After the 2017-18 season, the Buffalo Regals would relocate to the Cornerstone Ice Arena in Lockport, New York and would be renamed the Lockport Regals for the 2018-19 season.
- The Pelham Panthers will be moving into the new Pelham Community Centre for the 2018-19 season
|Caledonia Corvairs||Caledonia||Haldimand County Caledonia Centre|
Golden Horseshoe ConferenceEdit
|Niagara Falls Canucks||48||41||6||0||1||282||126||83|
|St. Catharines Falcons||47||39||6||0||2||259||106||80|
|Hamilton Kilty B's||48||35||12||0||1||194||110||71|
|Fort Erie Meteors||48||14||30||0||4||124||207||32|
|Welland Jr. Canadians||48||8||36||0||4||117||251||20|
|Elmira Sugar Kings||47||26||15||2||4||162||135||58|
|St. Thomas Stars||48||17||24||3||4||145||176||41|
|St. Marys Lincolns||48||11||30||3||4||134||201||29|
Sutherland Cup PlayoffsEdit
Each conference will hold its own playoffs with 8 teams qualifying for each conference. The three conference champions and the conference runner-up with the best "playoff record to date" qualify for the Sutherland Cup semifinals. The wildcard play the team with the better record of the two they didn't play in the conference final. All playoff series are best-of-seven. The Sutherland Cup champion does not advance any further as there is no Eastern Canada championship at the Junior B level.
Golden Horseshoe Conference QuarterfinalsEdit
- Niagara Falls Canucks defeated Lockport Regals 4 games to none
- St. Catharines Falcons defeated Welland Jr. Canadians 4 games to none
- Hamilton Kilty B's defeated Fort Erie Meteors 4 games to none
- Pelham Panthers defeated Thorold Blackhawks 4 games to 2
Midwestern Conference QuarterfinalsEdit
- Listowel Cyclones defeated Brampton Bombers 4 games to none
- Stratford Warriors defeated Brantford 99ers 4 games to 1
- Waterloo Siskins defeated Cambridge Winter Hawks 4 games to 1
- Kitchener Dutchmen defeated Elmira Sugar Kings 4 games to 3
Western Conference QuarterfinalsEdit
- Leamington Flyers defeated Strathroy Rockets 4 games to 1
- London Nationals defeated St. Thomas Stars 4 games to 1
- Komoka Kings defeated Chatham Maroons 4 games to 1
- LaSalle Vipers defeated Sarnia Legionnaires 4 games to none
Golden Horseshoe Conference SemifinalsEdit
- Niagara Falls Canucks defeated Pelham Panthers 4 games to none
- St. Catharines Falcons defeated Hamilton Kilty B's 4 games to 2
Midwestern Conference SemifinalsEdit
- Listowel Cyclones defeated Kitchener Dutchmen 4 games to 1
- Waterloo Siskins defeated Stratford Warriors 4 games to 2
Western Conference SemifinalsEdit
- Leamington Flyers defeated Komoka Kings 4 games to 3
- London Nationals defeated LaSalle Vipers 4 games to 1
Golden Horseshoe Conference FinalEdit
Midwestern Conference FinalEdit
Western Conference FinalEdit
Sutherland Cup SemifinalsEdit
The conference final loser with the best playoff record to date, the Listowel Cyclones also advances.
- London Nationals defeated Listowel Cyclones 4 games to 2
- Waterloo Siskins defeated Niagara Falls Canucks 4 games to 3