Official NHA Assessment

Race 6: BETWAY BOOST MR 78 HANDICAP (Open)

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Line Horse
Absolute Value
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
6 / 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    Battleground         5    60.0    1    0.00     0.0   82    97           82    +0
2    Breeze Over          5    60.0    2    1.00     0.0   82    102          102   +20
3    American Grayson     3    59.0    3    1.25     11.0  80    78           78    -2
4    Absolute Value       3    58.5    4    3.25     11.0  75    75           75    +0
5    Angel's Wish         6    53.5    5    3.50     0.0   68    86           86    +18
6    Rule Book            6    59.5    6    4.50     0.0   77    97           97    +20
7    Monsieur Chevelle    3    54.5    7    5.25     11.0  67    64           64    -3
8    Over Two You         3    57.5    8    6.35     11.0  73    70           70    -3
9    Afraad               8    60.0    9    9.25     0.0   78    97           97    +19
10   Out Of Your League   5    57.0    10   19.50    0.0   77    91           91    +14
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Battleground 82 92 82 +10 0.0 -
2 Breeze Over 82 99 102 -3 0.0 -
3 American Grayson 80 84 78 +6 11.0 -
4 Absolute Value Line 75 84 75 +9 11.0
5 Angel's Wish 68 54 86 -32 0.0 -
6 Rule Book 77 92 97 -5 0.0 -
7 Monsieur Chevelle 67 63 64 -1 11.0 -
8 Over Two You 73 74 70 +4 11.0 -
9 Afraad 78 79 97 -18 0.0 -
10 Out Of Your League 77 77 91 -14 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