Official NHA Assessment

Race 7: GALLOP FORM MIDDLE STAKES (For horses with nett rating of 102 and below)

Back to Race
Line Horse
Riverstone
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
9 / 10
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Licence To Thrill    4    60.0    1    0.00     12.0  97    85           85    -12
2    Icy Blast            4    55.5    2    0.80     12.0  86    76           76    -10
3    Riverstone           2    55.5    3    1.30     7.0   86    86           86    +0
4    Quandary             5    58.5    4    3.30     0.0   92    106          106   +14
5    Hithemhardsunshine   2    61.5    5    3.35     7.0   102   98           98    -4
6    Agrado               3    55.5    6    4.40     10.5  84    79           79    -5
7    King Of Spin         3    58.5    7    4.70     10.5  91    85           85    -6
8    Ingqwele             3    51.5    8    9.30     10.5  84    71           74    -10
9    Bourbon Warrior      3    60.0    9    11.30    10.5  95    88           88    -7
10   Sequoia              6    61.5    10   13.80    0.0   102   112          112   +10
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Licence To Thrill 97 98 85 +13 12.0 -
2 Icy Blast 86 88 76 +12 12.0 -
3 Riverstone Line 86 84 86 -2 7.0
4 Quandary 92 88 106 -18 0.0 -
5 Hithemhardsunshine 102 92 98 -6 7.0 -
6 Agrado 84 85 79 +6 10.5 -
7 King Of Spin 91 91 85 +6 10.5 -
8 Ingqwele 84 84 74 +10 10.5 -
9 Bourbon Warrior 95 99 88 +11 10.5 -
10 Sequoia 102 99 112 -13 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