Official NHA Assessment

Race 4: TABGOLD SCORE 6 SCORE 8 SCORE 10 MR 71 HANDICAP (Open)

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Line Horse
Kimball O'Hara
Reference for assessment
Exact Matches
2 / 8
Calculated = Official
Close Matches
4 / 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    Jazz Festival        5    60.0    1    0.00     0.0   71    67           71    +0
2    Global Movement      6    59.0    2    0.10     0.0   69    65           65    -4
3    Kimball O'Hara       2    60.0    3    0.90     0.0   71    71           71    +0
4    Iron Will            4    59.0    4    1.00     4.0   69    61           61    -8
5    Shotgun Willie       3    59.0    5    1.80     7.0   69    54           59    -10
6    Pongola              5    56.5    6    2.70     0.0   67    62           62    -5
7    Move To Prove        2    51.5    7    5.80     0.0   73    50           63    -10
99   Basie Raakvat        4    58.0    99   0.00     4.0   -     55           55    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jazz Festival 71 70 71 -1 0.0 -
2 Global Movement 69 65 65 ✓ Match 0.0 -
3 Kimball O'Hara Line 71 61 71 -10 0.0
4 Iron Will 69 63 61 +2 4.0 -
5 Shotgun Willie 69 66 59 +7 7.0 -
6 Pongola 67 66 62 +4 0.0 -
7 Move To Prove 73 63 63 ✓ Match 0.0 -
99 Basie Raakvat - 63 55 +8 4.0 -
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