Official NHA Assessment

Race 4: GULF RACING CLUB SYNDICATE MAIDEN PLATE (For all Maidens)

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Line Horse
Spelling Bee
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
1 / 8
Within 2 points
Significant Diffs
6 / 8
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    Blue Bay             3    60.0    1    0.00     4.0   86    66           66    -20
2    Daimyo               3    60.0    2    0.40     4.0   71    71           71    +0
3    Song To The Moon     3    60.0    3    1.90     4.0   80    69           70    -10
4    Spelling Bee         2    60.0    4    2.90     0.0   76    76           76    +0
5    Tom's Diner          4    60.0    5    3.00     2.0   76    72           72    -4
6    Water Dragon         2    60.0    6    4.25     0.0   -     75           75    +75
7    Voorloopertjie       2    60.0    7    5.25     0.0   80    74           74    -6
99   Midway               3    60.0    99   0.00     4.0   -     66           66    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Blue Bay 86 84 66 +18 4.0 -
2 Daimyo 71 105 71 +34 4.0 -
3 Song To The Moon 80 84 70 +14 4.0 -
4 Spelling Bee Line 76 86 76 +10 0.0
5 Tom's Diner 76 94 72 +22 2.0 -
6 Water Dragon - 70 75 -5 0.0 -
7 Voorloopertjie 80 96 74 +22 0.0 -
99 Midway - 65 66 -1 4.0 -
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