Official NHA Assessment

Race 4: SANDOWN RACECOURSE MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Coccolina
Reference for assessment
Exact Matches
2 / 16
Calculated = Official
Close Matches
5 / 16
Within 2 points
Significant Diffs
7 / 16
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    Scarlet Starlet      3    60.0    1    0.00     5.0   -     67           6     +6
2    Tipperary            3    57.5    2    0.50     5.0   62    62           62    +0
3    Past Is Prologue     3    60.0    3    1.50     5.0   -     67           67    +67
4    Coccolina            3    60.0    4    3.30     5.0   67    67           67    +0
5    Peach Melba          3    60.0    5    3.70     5.0   -     67           67    +67
6    Stampede Ahead       2    60.0    6    4.10     3.5   74    70           70    -4
7    Saudi Sweep          3    60.0    7    6.10     5.0   70    67           67    -3
8    Red Secret           3    60.0    8    6.40     5.0   69    67           67    -2
9    Miss Danon           2    58.5    9    7.30     3.5   75    67           67    -8
10   Future Prospect      3    60.0    10   7.60     5.0   63    67           67    +4
11   Amphitrite           3    60.0    11   9.90     5.0   60    67           67    +7
12   Belligerent          2    60.0    12   11.00    3.5   78    70           70    -8
13   Pizazz               3    57.5    13   11.05    5.0   66    62           62    -4
14   American Gem         2    60.0    14   18.55    3.5   75    70           70    -5
15   Cartel Queen         2    56.0    15   32.55    3.5   70    62           62    -8
99   Tenet                3    60.0    99   0.00     5.0   -     67           67    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Scarlet Starlet - 79 6 +73 5.0 -
2 Tipperary 62 64 62 +2 5.0 -
3 Past Is Prologue - 81 67 +14 5.0 -
4 Coccolina Line 67 67 67 ✓ Match 5.0
5 Peach Melba - 78 67 +11 5.0 -
6 Stampede Ahead 74 76 70 +6 3.5 -
7 Saudi Sweep 70 68 67 +1 5.0 -
8 Red Secret 69 59 67 -8 5.0 -
9 Miss Danon 75 72 67 +5 3.5 -
10 Future Prospect 63 58 67 -9 5.0 -
11 Amphitrite 60 62 67 -5 5.0 -
12 Belligerent 78 72 70 +2 3.5 -
13 Pizazz 66 62 62 ✓ Match 5.0 -
14 American Gem 75 75 70 +5 3.5 -
15 Cartel Queen 70 66 62 +4 3.5 -
99 Tenet - - 67 -67 5.0 -
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