Official NHA Assessment

Race 1: WATCH RACING & STAY FOR THE GAME OPEN MAIDEN (F & M) (For all Maiden Fillies & Mares)

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Line Horse
Praise De La Rey
Reference for assessment
Exact Matches
1 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
5 / 10
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    Chasing Gold         2    53.0    1    0.00     0.0   61    60           60    -1
2    Praise De La Rey     2    54.0    2    3.40     0.0   63    63           63    +0
3    Spanish Feud         2    58.5    3    7.10     0.0   72    71           71    -1
4    Skipper O'Malley     3    60.0    4    7.30     6.0   64    62           62    -2
5    Codeword             2    55.5    5    10.00    0.0   58    65           65    +7
6    Magical Spring       3    59.0    6    11.30    6.0   -     60           60    +60
7    Danegeld             3    54.5    7    12.90    6.0   64    51           54    -10
8    Princess Shelly      3    51.5    8    41.60    6.0   30    45           45    +15
99   Liwa's Flight        3    51.5    99   0.00     6.0   -     45           45    +0
99   Princess Charmer     2    50.0    99   0.00     0.0   -     54           54    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Chasing Gold 61 69 60 +9 0.0 -
2 Praise De La Rey Line 63 66 63 +3 0.0
3 Spanish Feud 72 67 71 -4 0.0 -
4 Skipper O'Malley 64 62 62 ✓ Match 6.0 -
5 Codeword 58 54 65 -11 0.0 -
6 Magical Spring - 62 60 +2 6.0 -
7 Danegeld 64 62 54 +8 6.0 -
8 Princess Shelly 30 30 45 -15 6.0 -
99 Liwa's Flight - 60 45 +15 6.0 -
99 Princess Charmer - 50 54 -4 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