Official NHA Assessment

Race 3: #THISISRACING MR 86 HANDICAP (Open)

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Line Horse
Zig Zag
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
5 / 12
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Herodotus            6    62.5    1    0.00     0.0   91    89           91    +0
2    Zig Zag              5    54.5    2    2.50     0.0   75    75           75    +0
3    Euphoric             6    53.0    3    3.25     0.0   72    72           72    +0
4    Var's Boy            6    56.5    4    4.25     0.0   79    78           78    -1
5    Alado's Pride        7    55.5    5    4.75     0.0   76    75           75    -1
6    Psycho King          5    56.0    6    5.50     0.0   78    76           76    -2
7    American Landing     7    56.0    7    6.75     0.0   78    76           76    -2
8    Wind Sock            3    52.0    8    10.50    3.0   73    62           63    -10
9    El Romiachi          8    56.5    9    10.55    0.0   79    77           77    -2
10   Phil's Power         7    57.5    10   14.80    0.0   81    79           79    -2
11   Falling For You      5    53.5    11   17.80    0.0   78    71           71    -7
12   Pacific Duke         4    54.0    12   24.55    1.5   74    69           69    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Herodotus 91 102 91 +11 0.0 -
2 Zig Zag Line 75 87 75 +12 0.0
3 Euphoric 72 62 72 -10 0.0 -
4 Var's Boy 79 73 78 -5 0.0 -
5 Alado's Pride 76 73 75 -2 0.0 -
6 Psycho King 78 64 76 -12 0.0 -
7 American Landing 78 80 76 +4 0.0 -
8 Wind Sock 73 68 63 +5 3.0 -
9 El Romiachi 79 77 77 ✓ Match 0.0 -
10 Phil's Power 81 75 79 -4 0.0 -
11 Falling For You 78 74 71 +3 0.0 -
12 Pacific Duke 74 49 69 -20 1.5 -
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