Official NHA Assessment

Race 1: #THISISRACING WELCOMES YOU MAIDEN PLATE (For all Maidens)

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Line Horse
Clap Of Thunder
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
0 / 9
Within 2 points
Significant Diffs
7 / 9
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    Total Protection     2    56.0    1    0.00     0.0   -     61           6     +6
2    Clap Of Thunder      3    60.0    2    2.40     1.0   69    69           69    +0
3    Lord Of Light        2    56.0    3    3.10     0.0   -     63           63    +63
4    Main Mission         2    52.0    4    4.40     0.0   -     53           53    +53
5    Player               3    60.0    5    5.00     1.0   -     67           67    +67
6    Flow Forever         3    60.0    6    5.10     1.0   67    67           67    +0
7    Going Global         3    60.0    7    12.60    1.0   58    67           67    +9
8    Bye Bye Birdie       3    60.0    8    14.00    1.0   58    67           67    +9
9    Warrior The Brave    2    56.0    9    18.25    0.0   -     61           61    +61
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Total Protection - 96 6 +90 0.0 -
2 Clap Of Thunder Line 69 66 69 -3 1.0
3 Lord Of Light - 77 63 +14 0.0 -
4 Main Mission - 71 53 +18 0.0 -
5 Player - 84 67 +17 1.0 -
6 Flow Forever 67 63 67 -4 1.0 -
7 Going Global 58 50 67 -17 1.0 -
8 Bye Bye Birdie 58 57 67 -10 1.0 -
9 Warrior The Brave - 50 61 -11 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