Official NHA Assessment

Race 8: GORDON STERLEY, HENNIE VAN WYK, HAROLD WHITEHEAD FM 99 DIVIDED HANDICAP (F & M) (For Fillies and Mares)

Back to Race
Line Horse
Juliet Tango
Reference for assessment
Exact Matches
0 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
1 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Doitwithdiamonds     4    58.0    1    0.00     1.5   95    94           95    +0
2    Juliet Tango         6    49.5    2    1.60     0.0   83    83           83    +0
3    I Am Regal           5    52.0    3    4.30     0.0   80    85           85    +5
4    Mount Etna           4    53.0    4    5.55     1.5   85    84           84    -1
5    Miss Scaletta        3    58.0    5    11.05    3.5   102   90           92    -10
6    Mary's Greenlight    4    62.0    6    17.75    1.5   103   102          102   -1
7    Rani Of Kittur       4    57.5    7    22.00    1.5   94    93           93    -1
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Doitwithdiamonds 95 99 95 +4 1.5 -
2 Juliet Tango Line 83 81 83 -2 0.0
3 I Am Regal 80 75 85 -10 0.0 -
4 Mount Etna 85 79 84 -5 1.5 -
5 Miss Scaletta 102 96 92 +4 3.5 -
6 Mary's Greenlight 103 103 102 +1 1.5 -
7 Rani Of Kittur 94 94 93 +1 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