This is a list of OHA standings and season-by-season summaries of the Ontario Hockey Association's Junior A division from 1933 to 1972, and its Tier I division from 1972 to 1974.

Legend GP = games played W = wins L = losses T = ties Pts = points GF = goals for GA = goals against

1933–34 The Toronto St. Michael's Majors won the J. Ross Robertson Cup, defeating the Stratford Midgets 2 games to 0.

Team GP W L T Pts GF GA Group 6 Toronto Young Rangers 12 8 4 0 22 76 50 Parkdale Canoe Club 12 5 6 1 14 49 40 Toronto Canoe Club 12 2 10 0 4 37 88 University of Toronto 12 2 10 0 4 38 95 Group 7 Toronto St. Michael's Majors 12 12 0 0 32 104 36 Oshawa Majors 15 12 2 1 25 93 27 Toronto Lions 12 5 6 1 17 47 42 Toronto Native Sons 12 5 6 1 11 57 58 West Toronto Nationals 12 2 10 0 4 25 94 Group 11A London 6 4 2 0 8 20 9 Woodstock 6 4 2 0 8 15 15 Paris 6 2 3 1 5 16 21 Ingersoll 6 1 4 1 3 15 21 Group 11B Windsor Wanderers Only Jr. A team in group Group 12 Stratford Midgets 14 11 1 2 24 82 41 Kitchener Empires 15 8 3 4 20 56 54 Galt Terrier Pups 15 8 6 1 17 48 41 Hamilton Hockey Club 16 6 7 3 15 50 47 Brantford Lions 16 0 16 0 0 47 100

Playoffs Group Semi-finals London beat Woodstock 3 goals to 2. (1-2, 2-0) Kitchener Empires beat Galt Terrier Pups 5 goals to 4. (1-3, 4-1)

Group Finals Toronto Young Rangers beat Parkdale Canoe Club 13 goals to 3. (4-2, 9-1) Toronto St. Michael's Majors beat Oshawa Majors 2 wins to none, 1 tie. (3-3, 8-2, 10-4) Windsor Wanderers beat London 8 goals to 5. (2-0, 6-5) Stratford Midgets beat Kitchener Empires 11 goals to 9. (5-4, 6-5)

Semi-final Stratford Midgets beat Windsor Wanderers 25 goals to 3. (6-2, 19-1) Toronto St. Michael's Majors beat Toronto Young Rangers 13 goals to 3. (6-0, 7-3)

Robertson Cup Finals Toronto St. Michael's Majors beat Stratford Midgets 2 wins to none. (7-0, 4-2)

OHA Grand Championship Toronto St. Michael's Majors beat St. Michael's Buzzers (Jr. B) by default. (12-3, default)

1934–35 The Kitchener Greenshirts won the J. Ross Robertson Cup by default over the Oshawa Majors.

Team GP W L T Pts GF GA Group 1 Oshawa Majors 14 13 1 0 26 94 24 Toronto Lions 13 9 4 0 18 66 61 Toronto St. Michael's Majors 14 6 5 1 13 46 37 West Toronto Nationals 12 1 10 1 3 29 55 Toronto Native Sons 9 0 9 0 0 15 73 Group 2 Parkdale Canoe Club 9 5 2 2 12 30 26 Toronto Young Rangers 9 5 3 1 11 32 25 Toronto Cubs 9 4 3 2 10 27 18 University of Toronto 9 1 7 1 3 21 41 Group 3 Kitchener Greenshirts 19 18 1 0 36 106 36 Stratford Midgets 20 11 8 1 23 34 30 Galt Terrier Pups 20 10 10 0 20 47 76 Brantford 19 9 9 1 19 51 53 Hamilton 20 6 14 0 12 48 90 Guelph 20 4 16 0 8 27 48 Group 4 Windsor Wanderers Only Jr. A team in group

Playoffs Group Semi-finals Toronto Lions beat Toronto St. Michael's Majors 8 goals to 7. (0-3, 5-2, 3-2) Stratford Midgets beat Galt Terrier Pups 11 goals to 2. (6-1, 5-1)

Group Finals Oshawa Majors beat Toronto Lions 2 wins to none. (10-2, 10-3) Toronto Young Rangers beat Parkdale Canoe Club 13 goals to 4. (4-3, 9-1) Kitchener Greenshirts beat Stratford Midgets 2 wins to none, 1 tie. (2-2, 6-1, 5-4)

Semi-final Kitchener Greenshirts beat Windsor Wanderers 10 goals to 4. (4-1, 6-3) Oshawa Majors beat Toronto Young Rangers 10 goals to 8. (3-4, 4-3, 3-1)

Robertson Cup Final Results thrown out due to Oshawa using illegal player. Oshawa won Game 1 4-1, Kitchener won Game 2 4-3, then it was discovered that Oshawa used an illegal player (Bill Bagnall). Due to time constraints a third game was then played to determine entry into the Memorial Cup playdowns, but not the winner of the winner of the Robertson Cup -- to be determined later.

Robertson Cup replay Quarter-final Toronto Lions 9 - Toronto Young Rangers 8 (OT)

Semi-final Kitchener Greenshirts 7 - Toronto Lions 5

Final Kitchener Greenshirts beat Oshawa Majors by default Oshawa refused to play, claiming they had already won the championship. The Ontario Hockey Association disagreed and awarded the title to Kitchener.

1935–36 The West Toronto Nationals won the J. Ross Robertson Cup, defeating the Kitchener Greenshirts 2 games to 0. Team GP W L T Pts GF GA Group 1 Toronto St. Michael's Majors 10 9 1 0 16 55 16 West Toronto Nationals 10 8 2 0 16 59 18 Toronto Native Sons 10 6 4 0 12 28 29 Toronto Young Rangers 11 4 7 0 8 29 36 Toronto Lions 11 3 8 0 6 23 45 University of Toronto 10 1 9 0 2 15 65 Group 2 Kitchener Greenshirts 8 7 1 0 14 31 16 Niagara Falls 7 4 3 0 10 31 27 Stratford Midgets 9 3 5 1 7 29 27 Port Colborne 7 0 6 1 3 18 39 Group 3 Oshawa Majors Only Jr. A team in group

Playoffs Group Semi-finals Toronto St. Michael's Majors beat Toronto Native Sons 9 goals to 6. (3-4, 6-2) West Toronto Nationals beat Toronto Young Rangers 6 goals to 3. (5-0, 1-3) Stratford Midgets beat Niagara Falls 12 goals to 9. (6-5, 6-4)

Group Finals West Toronto Nationals beat Toronto St. Michael's Majors 3 wins to none. (1-0, 6-1, 6-5) Kitchener Greenshirts beat Stratford Midgets 5 goals to 1. (2-0, 3-1)

Semi-final West Toronto Nationals beat Oshawa Majors 2 wins to none. (5-2, 6-2)

Robertson Cup Final West Toronto Nationals beat Kitchener Greenshirts 2 wins to none. (3-2, 6-1)

1936–37 The Toronto St. Michael's Majors won the J. Ross Robertson Cup, defeating the Stratford Midgets 3 games to 2.

Team GP W L T Pts GF GA Group 1 Toronto St. Michael's Majors 12 9 2 1 19 62 27 Oshawa Generals 12 8 2 2 18 69 36 Toronto Young Rangers 12 8 3 1 17 58 30 Toronto British Consols 12 6 4 2 14 53 46 Toronto Lions 12 4 8 0 8 36 60 University of Toronto 12 3 9 0 6 41 63 Toronto Native Sons 12 1 11 0 2 18 75 Group 2 Stratford Midgets Only Junior A teams Kitchener Greenshirts from a mixed group Playoffs Group Semi-finals Toronto St. Michael's Majors beat Toronto Young Rangers 2 wins to 1. (7-4, 3-4, 12-4) Toronto British Consols beat Oshawa Generals 2 wins to none. (4-1, 5-5, 7-4)

Group Finals Toronto St. Michael's Majors beat Toronto British Consols 3 wins to none. (4-3, 5-3, 3-1) Stratford Midgets beat Kitchener Greenshirts 2 wins to none. (5-3, 4-1)

Robertson Cup Toronto St. Michael's Majors beat Stratford Midgets 3 wins to 2. (6-2, 4-7, 4-5, 6-5, 8-3)

1937–38 The Oshawa Generals won the J. Ross Robertson Cup, defeating the Guelph Indians 3 games to 0.

Team GP W L T Pts GF GA Group 1 Toronto Marlboros 12 12 0 0 24 80 27 Oshawa Generals 12 8 4 0 16 57 42 Toronto St. Michael's Majors 12 7 5 0 14 52 38 Toronto Young Rangers 12 6 6 0 12 41 54 Toronto Native Sons 12 5 7 0 10 45 44 Toronto Varsity Blues 11 2 9 0 4 27 47 Toronto Lions 11 1 10 0 2 22 72 Group 2 Stratford Midgets 16 14 2 0 28 - - Guelph Indians 16 11 5 0 22 - - Kitchener Greenshirts 16 7 8 1 15 - - Galt Terrier Pups 16 5 10 1 11 - - Hamilton Tigers 16 2 14 0 4 - -

1938–39 The Oshawa Generals won the J. Ross Robertson Cup, defeating the Toronto Native Sons 3 games to 0.

Team GP W L T Pts GF GA Group 1 Toronto St. Michael's Majors 14 10 4 0 20 70 43 Guelph Indians 14 7 5 2 15 30 38 Toronto Marlboros 14 4 9 1 9 33 53 Toronto Varsity Blues 14 1 10 3 5 27 63 Group 2 Oshawa Generals 14 13 1 0 36 83 27 Toronto Young Rangers 14 9 4 1 19 50 41 Toronto Native Sons 14 7 6 1 15 53 45 Toronto Lions 14 1 13 0 2 24 76

1939–40 The Guelph Indians become Guelph Biltmores. The league drops its divisions. The Toronto St. Michael's Majors and the Toronto Lions drop out of the league. The University of Toronto Varsity Blues drop out of the league mid-season. The Oshawa Generals won the J. Ross Robertson Cup, defeating the Toronto Marlboros 3 games to 2.

Team GP W L T Pts GF GA Oshawa Generals 18 15 1 2 32 120 46 Toronto Marlboros 19 11 5 3 25 106 49 Toronto Young Rangers 20 12 8 0 24 67 93 Guelph Biltmores 20 10 8 2 22 88 61 Toronto Native Sons 20 4 15 1 9 48 113 Toronto Varsity Blues* 17 1 16 0 2 39 108

1940–41 Toronto Young Rangers are renamed Toronto Bowles Rangers. The Oshawa Generals won the J. Ross Robertson Cup, defeating the Toronto Marlboros 4 games to 3.

Team GP W L T Pts GF GA Toronto Marlboros 17 13 3 1 25 113 51 Oshawa Generals 16 10 4 2 22 101 67 Guelph Biltmores 16 11 5 0 22 85 75 Toronto Bowles Rangers 15 4 10 1 9 73 84 Toronto Native Sons 15 0 15 0 0 52 147

1941–42 The Toronto Bowles Rangers revert to being the Toronto Young Rangers. The Toronto St. Michael's Majors rejoin the league. The Brantford Lions join the league. The Toronto Native Sons drop out halfway through the season, and declare all their games forfeit. The Oshawa Generals won the J. Ross Robertson Cup, defeating the Guelph Biltmores 3 games to 2.

Team GP W L T Pts GF GA Brantford Lions 24 19 5 0 38 183 83 Oshawa Generals 24 17 7 0 34 143 88 Guelph Biltmores 24 13 11 0 26 100 115 Toronto Marlboros 24 12 10 2 26 73 79 Toronto Young Rangers 24 11 11 2 24 87 89 Toronto St. Michael's Majors 24 10 14 0 20 66 120 Toronto Native Sons* — 0 24 0 0 43 120

1942–43 The Hamilton Whizzers and the Stratford Kroehlers join the league. The Guelph Biltmores drop out of the league. The Toronto Young Rangers drop out of the league. The Oshawa Generals won the J. Ross Robertson Cup, defeating the Brantford Lions 4 games to 1.

Team GP W L T Pts GF GA Oshawa Generals 22 17 5 0 36 134 72 Brantford Lions 22 12 10 2 26 102 98 Hamilton Whizzers 24 11 9 4 26 122 106 Stratford Kroehlers 25 7 9 9 24 75 78 Toronto St. Michael's Majors 21 9 11 1 23 92 99 Toronto Marlboros 21 8 12 1 17 105 119

1943–44 The OHA splits into two groups when four teams join the league; the Galt Canadians, St. Catharines Falcons, Port Colborne Recreationists, and Toronto Young Rangers. The Oshawa Generals won the J. Ross Robertson Cup, defeating the Toronto St. Michael's Majors 4 games to 1. Oshawa's Ken Smith won the scoring title with 53 goals and 26 assists for 79 points, followed by teammates Bob Love (75) and Bill Ezinicki (63).

Team GP W L T Pts GF GA Group 1 Oshawa Generals 26 23 3 0 46 203 69 Toronto St. Michael's Majors 25 21 4 0 44 169 69 Hamilton Whizzers 25 12 12 1 25 113 124 Toronto Marlboros 26 8 15 1 18 73 122 Toronto Young Rangers 25 1 23 1 3 48 156 Group 2 St. Catharines Falcons 26 15 9 2 32 125 103 Galt Canadians 26 15 11 0 30 125 97 Brantford Lions 25 11 13 1 23 90 126 Port Colborne Recreationists 26 10 16 0 20 111 126 Stratford Kroehlers 25 7 16 2 16 99 154

1944–45 The OHA groups are dissolved when the Brantford Lions, Stratford Kroehlers and Hamilton Barons drop out of league. The Galt Canadians become the Galt Red Wings. The Port Colborne Recreationists had only one victory as of December 13, 1944, when they withdrew from the OHA citing lack of competitiveness and transportation. The inaugural Red Tilson Trophy is awarded to Doug McMurdy, as the most outstanding player in the OHA; Albert "Red" Tilson, a recent Oshawa Generals player and the OHA scoring champion of 1942–43, was killed in World War II action just as the 1944–45 OHA season was starting. The Toronto St. Michael's Majors won the J. Ross Robertson Cup, defeating the Galt Red Wings 4 games to 0.

Team GP W L T Pts GF GA Toronto St. Michael's Majors 19 18 1 0 36 174 54 St. Catharines Falcons 20 12 8 0 24 101 93 Galt Red Wings 20 12 8 0 24 83 91 Oshawa Generals 20 9 11 0 18 75 80 Toronto Young Rangers 19 6 13 0 12 56 90 Toronto Marlboros 20 2 18 0 4 52 141 Port Colborne Recreationists* 7 1 6 0 2 24 49 (*) folded mid-season

1945–46 The Barrie Flyers and the Hamilton Lloyds join the league. The inaugural Eddie Powers Memorial Trophy is awarded for the top scorer in the league to Tod Sloan. He was also awarded the Red Tilson Trophy as the most outstanding player. The Toronto St. Michael's Majors won the J. Ross Robertson Cup, defeating the Oshawa Generals 4 games to 2.

Team GP W L T Pts GF GA Toronto St. Michael's Majors 28 26 2 0 52 199 54 Galt Red Wings 28 22 6 0 44 187 96 Oshawa Generals 28 17 11 0 34 155 101 St. Catharines Falcons 28 14 14 0 28 133 123 Toronto Marlboros 28 11 16 1 23 78 111 Toronto Young Rangers 28 8 17 3 19 78 110 Barrie Flyers 28 8 18 2 18 89 171 Hamilton Lloyds 28 3 25 0 6 76 229

1946–47