Official NHA Assessment

Race 4: BET WITH TOTE MAIDEN PLATE (For all Maidens)

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Line Horse
Donmagoo
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
5 / 8
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Quarter Master       3    56.0    1    0.00     2.5   73    54           54    -19
2    Highveld Storm       3    60.0    2    0.25     2.5   63    62           62    -1
3    Barry's Boy          3    60.0    3    0.30     2.5   70    62           62    -8
4    Donmagoo             3    60.0    4    3.70     2.5   62    62           62    +0
5    Ka Chow              2    54.5    5    5.20     1.5   -     53           53    +53
6    Jenny Darling        2    53.5    6    8.00     1.5   61    51           51    -10
7    Roy's Blossom        4    57.5    7    8.50     0.0   54    62           62    +8
8    Red Jubilee          3    60.0    8    19.20    2.5   -     62           62    +62
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Quarter Master 73 73 54 +19 2.5 -
2 Highveld Storm 63 65 62 +3 2.5 -
3 Barry's Boy 70 70 62 +8 2.5 -
4 Donmagoo Line 62 62 62 ✓ Match 2.5
5 Ka Chow - - 53 - 1.5 -
6 Jenny Darling 61 59 51 +8 1.5 -
7 Roy's Blossom 54 54 62 -8 0.0 -
8 Red Jubilee - - 62 -62 2.5 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points