Official NHA Assessment

Race 2: RACING TODAY MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Brooksider
Reference for assessment
Exact Matches
1 / 9
Calculated = Official
Close Matches
2 / 9
Within 2 points
Significant Diffs
7 / 9
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    Chief Runner         3    60.0    1    0.00     3.5   73    69           69    -4
2    Brooksider           3    60.0    2    1.25     3.5   69    69           69    +0
3    Garden Sun           3    60.0    3    3.50     3.5   66    69           69    +3
4    Flight Engineer      3    60.0    4    5.75     3.5   74    69           69    -5
5    War Lover            3    60.0    5    5.85     3.5   62    69           69    +7
6    Mitredat             3    60.0    6    9.35     3.5   54    69           69    +15
7    Princess Beautiful   3    57.5    7    13.10    3.5   66    64           64    -2
8    Pyro Prince          3    60.0    8    14.35    3.5   -     69           69    +69
9    Star Trooper         3    60.0    9    30.60    3.5   -     69           69    +69
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Chief Runner 73 59 69 -10 3.5 -
2 Brooksider Line 69 55 69 -14 3.5
3 Garden Sun 66 69 69 ✓ Match 3.5 -
4 Flight Engineer 74 58 69 -11 3.5 -
5 War Lover 62 55 69 -14 3.5 -
6 Mitredat 54 51 69 -18 3.5 -
7 Princess Beautiful 66 66 64 +2 3.5 -
8 Pyro Prince - 50 69 -19 3.5 -
9 Star Trooper - 51 69 -18 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