Official NHA Assessment

Race 10: NEXT VAAL RACEMEETING TUESDAY 22 MAY MR 72 HANDICAP (Open)

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Line Horse
Arilena
Reference for assessment
Exact Matches
0 / 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  
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1    Sylvan Warrior       2    58.0    1    0.00     1.5   87    65           87    +0
2    Inafix               4    57.0    2    0.05     0.0   66    66           66    +0
3    Arilena              6    62.5    3    0.95     0.0   77    77           77    +0
4    Lonely As A Cloud    3    59.0    4    2.20     2.5   73    65           65    -8
5    Gaelic Dancer        3    57.0    5    3.00     2.5   69    61           61    -8
6    Princess Lola        2    58.5    6    4.10     1.5   69    66           66    -3
7    Phala Millions       4    55.0    7    4.30     0.0   62    62           62    +0
8    Together Again       5    52.0    8    6.30     0.0   55    56           56    +1
9    One Party            3    56.5    9    8.90     2.5   76    60           66    -10
10   Wings Of Nike        6    59.5    10   10.90    0.0   71    71           71    +0
11   In The Ether         6    59.5    11   11.50    0.0   71    71           71    +0
12   Bregardt             4    52.0    12   13.50    0.0   53    56           56    +3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sylvan Warrior 87 101 87 +14 1.5 -
2 Inafix 66 69 66 +3 0.0 -
3 Arilena Line 77 75 77 -2 0.0
4 Lonely As A Cloud 73 71 65 +6 2.5 -
5 Gaelic Dancer 69 64 61 +3 2.5 -
6 Princess Lola 69 60 66 -6 1.5 -
7 Phala Millions 62 66 62 +4 0.0 -
8 Together Again 55 55 56 -1 0.0 -
9 One Party 76 75 66 +9 2.5 -
10 Wings Of Nike 71 68 71 -3 0.0 -
11 In The Ether 71 63 71 -8 0.0 -
12 Bregardt 53 52 56 -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