Official NHA Assessment

Race 7: EASTER SPRINT (For horses 3 years and older - Non-Black Type)

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Line Horse
Rio Querari
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
2 / 7
Within 2 points
Significant Diffs
4 / 7
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    Dance Variety        2    55.5    1    0.00     2.0   102   99           99    -3
2    Mufasa               6    58.5    2    0.75     0.0   107   109          109   +2
3    Rio Querari          5    63.0    3    1.50     0.0   118   118          118   +0
4    Tough Terrain        5    51.0    4    2.50     0.0   86    94           94    +8
5    Mr Cobbs             5    58.5    5    2.60     0.0   108   109          109   +1
6    Elusive Winter       4    51.0    6    9.60     3.5   84    87           87    +3
99   Icy Blast            4    52.5    99   0.00     3.5   -     90           90    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dance Variety 102 114 99 +15 2.0 -
2 Mufasa 107 98 109 -11 0.0 -
3 Rio Querari Line 118 116 118 -2 0.0
4 Tough Terrain 86 81 94 -13 0.0 -
5 Mr Cobbs 108 106 109 -3 0.0 -
6 Elusive Winter 84 104 87 +17 3.5 -
99 Icy Blast - 88 90 -2 3.5 -
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