1988–89 OHL season

The Peterborough Petes won the J. Ross Robertson Cup, defeating the Niagara Falls Thunder.

This would be the first club since the Niagara Falls Flyers, who relocated to North Bay in 1982, to be based out of the city.

Kingston had used the Canadians name since they were announced as an expansion club in 1973.

The club changed their colour scheme from red, blue and white to black, silver and white, effectively stealing the NFL's Los Angeles Raiders' name and color scheme.

Note: GP = Games played; W = Wins; L = Losses; T = Ties; GF = Goals for; GA = Goals against; PTS = Points; x = clinched playoff berth; y = clinched division title [1]