1971 To 1993
In 1971, the league re-aligned itself geographically. The Owen Sound Greys and Collingwood Blues jumped to the Mid-Ontario Junior B Hockey League. The Waterloo Siskins and Kitchener Ranger B's moved over to the Western Ontario Junior B Hockey League. The Burlington Mohawks were the only team to stay put. In return, the Central League gained many teams from the Mid-Ontario Junior B Hockey League, like the Oakville Blades, Milton Flyers, Hespeler Shamrocks and Streetsville Derbys. They also gained the Dundas Blues and the Brampton Vic Woods.
The 1972 champion is unknown, but in 1973 Burlington won the Central League and in 1974 and 1975 Oakville won two straight league titles. The 1974-75 season was special for the Oakville Blades. After winning the league championship, they won their way all the way to the Sutherland Cup final. Unfortunately for the Blades, the Bramalea Blues of the Metro Junior B Hockey League awaited them. The Blues defeated the Blades 4-games-to-3.
From the 1975-76 season until the 1979-80 season, the Central League was dominated by the Streetsville Derbys. In this span, the Derbys won the League title five straight times, made the Ontario finals three times, and won the Sutherland Cup once. In 1977, the Derbys made the All-Ontario final. In the final, they lost to the Stratford Cullitons of the Waterloo-Wellington Junior B Hockey League 4-games-to-2. A year later, the Derbys again met the Stratford Cullitons (now of the Mid-Western Junior B Hockey League), but lost 9-points-to-5. The 1978-79 season had the Derbys make the Sutherland Cup final for the third straight year. In the final, the Derbys met the St. Catharines Falcons of the Golden Horseshoe Junior B Hockey League and defeated them 4-games-to-none to finally win a provincial title.
In 1978 the Mid-Ontario league folded, and Orillia Terriers, Thornhill Thunderbirds, the Barrie Colts, and Oak Ridges Dynes joined the Central League.
The 1980-81 season had a team other than the Derbys show dominance, as the Burlington Cougars won the Central League championship. They kept on winning and found themselves in the Sutherland Cup final. The Cougars came up against the Stratford Cullitons of the Mid-Western League and were victorious, winning 8-points-to-4. In 1982, the Oakville Blades won the Central league for the first time in seven years.
From the 1982-83 season until the 1985-86 season, the Streetsville Derbys celebrated another period of dominance. In those four seasons, the Derbys won three league championships, made the Ontario final twice, and received a harsh punishment from the Ontario Hockey Association. In 1982-83, the Derbys won their first league title in three season, a year later they won it again and battled all the way to the Sutherland Cup final. In the final, the Derbys met the Waterloo Siskins of the Mid-Western League and despite a spirited performance, fell 4-games-to-3 to the Siskins. A year later, the Derbys failed to get out of their league. In 1985-86, the Derbys dominated the Central League again and won their third title in four years. They battled to the Sutherland Cup final and again met the Stratford Cullitons of the Mid-Western League. The Cullitons swept the series, 4-games-to-none, and the Derbys lost their discipline. The result was a one-year ban for the Streetsville Derbys from Ontario Hockey Association play. The Derbys were forced to sit out in 1986-87, as the Burlington Cougars won the league, and the Derbys never won another Central League title.
From the 1987-88 season until the 1989-90 season, the Barrie Colts dominated the league with three straight championships. None of these championships transpired into a Sutherland Cup.
In 1991, the Oakville Blades won the Central League, but lost the Sutherland Cup final to the Waterloo Siskins 4-games-to-none. In 1992, the Milton Merchants won the league championship, but also fell in the Sutherland Cup final, this time to the Kitchener Dutchmen. During the summer of 1992, the OHA promoted the Central League to Junior A status, allowing its teams less limitations on signing players then an average Junior B team would have. In 1992-93, the Barrie Colts dominated the CJAHL. With 47 wins and one tie, the Colts celebrated an unheard of undefeated season. They won the Central League championship, and were granted permission to compete in the Provincial Junior B playdowns. In the final of the Sutherland Cup, they met the Kitchener Dutchmen and swept them 4-games-to-none to win the Central League its third and final Sutherland Cup since 1971. The 1993 playoff run, aided by their Junior A status, was the final and most successful Provincial Jr. B playoff run of any Central League champion in at least twelve years.
The 1992-93 season would be the final Junior B season for the Central League. The teams in the league that year were the Barrie Colts, Markham Waxers, Peterborough Jr. Petes, Newmarket 87's, Orillia Terriers, Lindsay Bears, Ajax Axemen, Collingwood Blues, and Cobourg Cougars in the East Division and the Brampton Capitals, Burlington Cougars, Milton Merchants, Caledon Canadians, Oakville Blades, Streetsville Derbys (played that season in Mississauga), Georgetown Raiders, and Royal York Rangers in the West Division.