Official NHA Assessment

Race 7: NEXT TURFFONTEIN RACEMEETING SUNDAY 5 JANUARY FM 76 DIVIDED HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Rattle Bag
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
3 / 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    Shampimpi            4    57.0    1    0.00     2.5   70    64           70    +0
2    Pretty Analia        5    52.0    2    1.00     0.0   59    63           63    +4
3    Rattle Bag           6    60.0    3    3.50     0.0   76    76           76    +0
4    Boom Boom            4    59.0    4    3.70     2.5   74    69           69    -5
5    Whistledown          4    54.0    5    6.20     2.5   64    58           58    -6
6    Striking Angel       2    58.0    6    7.20     0.0   72    71           71    -1
7    Kalikaa              3    53.0    7    9.50     5.0   65    51           55    -10
8    Seventeen Again      2    57.5    8    99.99    0.0   80    70           70    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Shampimpi 70 70 70 ✓ Match 2.5 -
2 Pretty Analia 59 61 63 -2 0.0 -
3 Rattle Bag Line 76 71 76 -5 0.0
4 Boom Boom 74 81 69 +12 2.5 -
5 Whistledown 64 63 58 +5 2.5 -
6 Striking Angel 72 68 71 -3 0.0 -
7 Kalikaa 65 63 55 +8 5.0 -
8 Seventeen Again 80 80 70 +10 0.0 -
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