Official NHA Assessment

Race 5: RACING240 MR 70 HANDICAP (Open)

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Line Horse
Mariachi Madness
Reference for assessment
Exact Matches
1 / 8
Calculated = Official
Close Matches
2 / 8
Within 2 points
Significant Diffs
4 / 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    Across The Bow       3    52.5    1    0.00     9.5   55    49           55    +0
2    Mariachi Madness     2    55.5    2    0.30     6.5   61    61           61    +0
3    Peregrine Falcon     4    60.0    3    0.55     11.0  70    61           61    -9
4    Spy Story            3    61.0    4    1.15     9.5   72    66           66    -6
5    Michael Faraday      2    57.5    5    1.20     6.5   65    65           65    +0
6    His Lordship         3    59.0    6    1.90     9.5   71    62           62    -9
7    Stroke Of Mercy      5    52.0    7    3.70     0.0   54    67           67    +13
8    King Bluetooth       2    52.0    8    9.20     6.5   75    54           65    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Across The Bow 55 57 55 +2 9.5 -
2 Mariachi Madness Line 61 57 61 -4 6.5
3 Peregrine Falcon 70 74 61 +13 11.0 -
4 Spy Story 72 66 66 ✓ Match 9.5 -
5 Michael Faraday 65 68 65 +3 6.5 -
6 His Lordship 71 85 62 +23 9.5 -
7 Stroke Of Mercy 54 52 67 -15 0.0 -
8 King Bluetooth 75 53 65 -12 6.5 -
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