Official NHA Assessment

Race 6: TRACK & BALL GAMING FM 68 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Umhlali
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
8 / 11
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    Gimme A Lullaby      3    52.0    1    0.00     7.0   52    41           52    +0
2    Kitten's Adventure   3    60.0    2    2.50     7.0   68    59           59    -9
3    Umhlali              2    57.5    3    3.60     0.0   67    67           67    +0
4    Zariyah              2    58.0    4    3.80     0.0   78    68           68    -10
4    Birdwatcher          5    53.5    4    3.80     0.0   55    59           59    +4
6    A Time To Flower     2    54.0    6    4.20     0.0   57    60           60    +3
7    Miss Paget           4    58.0    7    5.10     4.5   78    58           68    -10
8    Thesupernovastar     3    60.0    8    5.35     7.0   82    57           72    -10
9    Natalia              2    55.5    9    6.35     0.0   60    62           62    +2
10   Writteninthesand     3    54.0    10   7.35     7.0   57    45           47    -10
11   Ghost Ship           3    59.5    11   8.55     7.0   68    56           58    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Gimme A Lullaby 52 59 52 +7 7.0 -
2 Kitten's Adventure 68 58 59 -1 7.0 -
3 Umhlali Line 67 67 67 ✓ Match 0.0
4 Zariyah 78 61 68 -7 0.0 -
4 Birdwatcher 55 53 59 -6 0.0 -
6 A Time To Flower 57 52 60 -8 0.0 -
7 Miss Paget 78 71 68 +3 4.5 -
8 Thesupernovastar 82 56 72 -16 7.0 -
9 Natalia 60 50 62 -12 0.0 -
10 Writteninthesand 57 57 47 +10 7.0 -
11 Ghost Ship 68 68 58 +10 7.0 -
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