Official NHA Assessment

Race 10: RACEHORSE OWNERS ASSOCIATION STAYERS (Open (Non-Black Type))

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Line Horse
Explosive Bond
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
8 / 12
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    Poets Warrior        5    60.0    1    0.00     0.0   104   119          110   +6
2    Explosive Bond       4    53.5    2    3.25     6.0   97    97           97    +0
3    Raiseahallelujah     7    60.0    3    5.50     0.0   103   119          119   +16
4    Battleground         5    56.0    4    6.00     0.0   96    111          111   +15
5    Arumugam             6    58.0    5    6.50     0.0   97    115          115   +18
6    Nebraas              8    60.0    6    11.75    0.0   106   119          119   +13
7    Breeze Over          5    58.0    7    12.25    0.0   97    115          115   +18
8    Prime Example        2    56.0    8    13.25    0.0   94    111          111   +17
9    Twenty Drachma's     4    54.0    9    13.75    6.0   92    95           95    +3
10   Home Of The Brave    2    58.0    10   99.99    0.0   101   115          115   +14
11   Flying Bull          4    58.0    11   99.99    6.0   98    103          103   +5
99   Woman's World        4    53.5    99   99.97    6.0   95    94           95    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Poets Warrior 104 114 110 +4 0.0 -
2 Explosive Bond Line 97 94 97 -3 6.0
3 Raiseahallelujah 103 103 119 -16 0.0 -
4 Battleground 96 92 111 -19 0.0 -
5 Arumugam 97 74 115 -41 0.0 -
6 Nebraas 106 101 119 -18 0.0 -
7 Breeze Over 97 99 115 -16 0.0 -
8 Prime Example 94 93 111 -18 0.0 -
9 Twenty Drachma's 92 83 95 -12 6.0 -
10 Home Of The Brave 101 97 115 -18 0.0 -
11 Flying Bull 98 98 103 -5 6.0 -
99 Woman's World 95 94 95 -1 6.0 -
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