Official NHA Assessment

Race 4: CALL TELEBET TRACK & BALL FIXED ODDS ON 031 314 1155 MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Tomyris
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
9 / 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    Blue Horizon         4    57.5    1    0.00     2.0   74    65           65    -9
2    Tomyris              4    60.0    2    0.40     2.0   75    75           75    +0
3    Gorgeous Girl        4    60.0    3    3.50     2.0   -     71           71    +71
4    Elusive Belle        4    60.0    4    3.70     2.0   72    71           71    -1
5    Madame Pompadour     2    60.0    5    4.00     0.0   71    75           75    +4
6    Vathomvlaffie        2    58.5    6    4.40     0.0   67    71           71    +4
7    Captain Marvel       3    60.0    7    20.10    3.0   51    68           68    +17
8    Roy's Oyster         6    60.0    8    21.10    0.0   29    74           74    +45
99   Long Street          4    60.0    99   0.00     2.0   -     70           70    +0
99   Ubukhwebezana        4    60.0    99   0.00     2.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Blue Horizon 74 84 65 +19 2.0 -
2 Tomyris Line 75 93 75 +18 2.0
3 Gorgeous Girl - 74 71 +3 2.0 -
4 Elusive Belle 72 51 71 -20 2.0 -
5 Madame Pompadour 71 56 75 -19 0.0 -
6 Vathomvlaffie 67 56 71 -15 0.0 -
7 Captain Marvel 51 49 68 -19 3.0 -
8 Roy's Oyster 29 20 74 -54 0.0 -
99 Long Street - 62 70 -8 2.0 -
99 Ubukhwebezana - 93 70 +23 2.0 -
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