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| Date | Sunday 19 September 1971 |
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| Start time | 14:00 |
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| Event | Canadian GP |
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| Circuit | Mosport Park |
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| Event Format | Race of 80 laps |
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| Race | 27 of 31 |
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| Championship race | 207 |
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| Laps | 64 |
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| Circuit Perimeter | 3957 m |
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| Race Distance | 3957 × 80 = 316.560 km (scheduled)
3957 × 64 = 253.248 km (raced) |
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| Grid Format | 3-2-3-2 |
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| Pole Position | Right |
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| First Corner | Right |
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| Track Direction | Clockwise |
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| Weather | Hazy, Rain |
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| Entries | 28 |
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| Qualifiers | 26 |
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| Finishers | 16 |
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| Championship Debutants |
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| Milestones | Car 33 - 10th Race Entry (Car Number)
Auto Motor und Sport/Team Surtees - 10th Race Entry (Entrant)
Brooke Bond Oxo/Rob Walker/Team Surtees - 10th Race Entry (Entrant)
Bruce McLaren Motor Racing - 1st Fastest Lap (Entrant)
Elf Team Tyrrell - 20th Race Entry (Entrant)
Gold Leaf Team Lotus - 100th Race Entry (Entrant)
Howden Ganley - 10th Race Entry (Driver)
Pete Lovely - 10th Race Entry (Driver)
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| Records Broken |
1. Highest 3rd Place Finish Ratio –  Mark Donohue (100.00%),
2. Most 9th Place Finishes in a Season –  Jo Siffert (3),
3. Most 15th Place Qualifications –  Graham Hill (7),
4. Most 22nd Place Qualifications in a Season – March (4),
5. Most 23rd Place Qualifications in a Season – Surtees (3)
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| Records Extended |
1. Most Retirements – Lotus (248),
2. Most Retirements – Graham Hill (61),
3. Most 9th Place Finishes – Jo Siffert (9),
4. Highest Race Win Ratio – Tyrrell (26.09%),
5. Most Race Entries – Ferrari (592),
6. Most Race Entries – Graham Hill (135),
7. Most 20th Place Qualifications in a Season – March (7),
8. Most 24th Place Qualifications in a Season – March (5)
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