Official NHA Assessment

Race 3: BATTLE FORCE (2021) MR 77 HANDICAP (Open)

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Line Horse
Rock Fall
Reference for assessment
Exact Matches
0 / 16
Calculated = Official
Close Matches
2 / 16
Within 2 points
Significant Diffs
10 / 16
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    Rockie Reef          3    59.5    1    0.00     3.0   76    72           76    +0
2    Arverni King         5    56.0    2    0.50     0.0   75    77           77    +2
3    Rock Fall            2    59.5    3    1.90     0.0   82    82           82    +0
4    Captain Chorus       5    58.5    4    2.10     0.0   74    80           80    +6
5    Professor Snape      2    59.0    5    2.15     0.0   81    81           81    +0
6    Cyber Time           3    58.0    6    2.20     3.0   73    73           73    +0
7    Indian Ocean         3    56.5    7    2.70     3.0   75    70           70    -5
8    Quantifier           2    57.5    8    2.85     0.0   78    77           77    -1
9    Twice Golden         5    56.0    9    3.45     0.0   77    73           73    -4
10   Exceeder             4    58.0    10   3.75     1.0   73    75           75    +2
11   Rise                 5    57.0    11   9.45     0.0   71    73           73    +2
12   Prime Example        2    60.0    12   9.85     0.0   83    79           79    -4
13   Go Flichity          2    59.5    13   13.35    0.0   82    78           78    -4
99   Riccardo             7    55.0    99   0.00     0.0   -     69           69    +0
99   Zakho                3    59.0    99   0.00     3.0   -     71           71    +0
99   Temperate Zone       2    55.5    99   0.00     0.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rockie Reef 76 97 76 +21 3.0 -
2 Arverni King 75 86 77 +9 0.0 -
3 Rock Fall Line 82 80 82 -2 0.0
4 Captain Chorus 74 67 80 -13 0.0 -
5 Professor Snape 81 68 81 -13 0.0 -
6 Cyber Time 73 81 73 +8 3.0 -
7 Indian Ocean 75 107 70 +37 3.0 -
8 Quantifier 78 74 77 -3 0.0 -
9 Twice Golden 77 84 73 +11 0.0 -
10 Exceeder 73 59 75 -16 1.0 -
11 Rise 71 69 73 -4 0.0 -
12 Prime Example 83 93 79 +14 0.0 -
13 Go Flichity 82 82 78 +4 0.0 -
99 Riccardo - 68 69 -1 0.0 -
99 Zakho - 87 71 +16 3.0 -
99 Temperate Zone - 74 70 +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