Official NHA Assessment

Race 7: CELEBRATING CENTURION MEMBER SUSAN ROWETT'S BIRTHDAY CLASS 4 (F & M) (For Fillies & Mares. Benchmark at 60.0kg = 80)

Back to Race
Line Horse
La Divina
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
7 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Fun Zone             5    62.5    1    0.00     0.0   85    84           84    -1
2    La Divina            4    57.5    2    1.25     1.5   75    75           75    +0
3    Girl Magic           3    55.5    3    1.45     3.0   77    67           67    -10
4    Lady Look Alike      4    55.0    4    2.20     1.5   70    69           69    -1
5    Enchanting Choice    4    60.0    5    2.40     1.5   80    78           78    -2
6    Among The Clouds     4    58.0    6    5.15     1.5   76    72           72    -4
7    Kamakazi             4    59.0    7    7.90     1.5   78    74           74    -4
8    My Only Weakness     3    58.0    8    9.15     3.0   82    69           72    -10
9    Family Power         4    60.0    9    9.90     1.5   80    76           76    -4
10   Eat Prey Love        3    52.5    10   12.90    3.0   71    58           61    -10
11   Jet To The Sun       4    59.0    11   99.99    1.5   78    74           74    -4
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Fun Zone 85 96 84 +12 0.0 -
2 La Divina Line 75 77 75 +2 1.5
3 Girl Magic 77 83 67 +16 3.0 -
4 Lady Look Alike 70 77 69 +8 1.5 -
5 Enchanting Choice 80 99 78 +21 1.5 -
6 Among The Clouds 76 77 72 +5 1.5 -
7 Kamakazi 78 73 74 -1 1.5 -
8 My Only Weakness 82 84 72 +12 3.0 -
9 Family Power 80 87 76 +11 1.5 -
10 Eat Prey Love 71 71 61 +10 3.0 -
11 Jet To The Sun 78 78 74 +4 1.5 -
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