Official NHA Assessment

Race 1: WELCOME TO NELSON MANDELA BAY MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Tune Again
Reference for assessment
Exact Matches
2 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
7 / 10
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    Concerto             4    60.0    1    0.00     7.0   -     36           6     +6
2    Royal Venus          2    60.0    2    2.00     4.0   52    42           42    -10
3    Best Intentions      2    60.0    3    2.25     4.0   68    42           58    -10
4    Fire Chaser          2    60.0    4    3.25     4.0   73    42           63    -10
5    Tune Again           6    60.0    5    5.25     0.0   50    50           50    +0
6    French Script        3    60.0    6    13.25    6.0   -     38           38    +38
7    Heartlight           2    60.0    7    14.75    4.0   52    42           42    -10
8    Predators Beauty     3    60.0    8    23.00    6.0   44    38           38    -6
9    Fuel The Frenzy      4    60.0    9    23.75    7.0   34    36           36    +2
99   Happy Vibes          3    60.0    99   0.00     6.0   -     38           38    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Concerto - 73 6 +67 7.0 -
2 Royal Venus 52 50 42 +8 4.0 -
3 Best Intentions 68 67 58 +9 4.0 -
4 Fire Chaser 73 52 63 -11 4.0 -
5 Tune Again Line 50 50 50 ✓ Match 0.0
6 French Script - 38 38 ✓ Match 6.0 -
7 Heartlight 52 48 42 +6 4.0 -
8 Predators Beauty 44 44 38 +6 6.0 -
9 Fuel The Frenzy 34 34 36 -2 7.0 -
99 Happy Vibes - 59 38 +21 6.0 -
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