Official NHA Assessment

Race 5: RACING240 FOR RACING. FOR YOU MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Instant Attraction
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
1 / 13
Within 2 points
Significant Diffs
11 / 13
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    Huehuetenango        3    60.0    1    0.00     4.5   73    77           77    +4
2    Instant Attraction   3    56.5    2    2.25     4.5   73    73           73    +0
3    Royal Miracle        3    60.0    3    14.00    4.5   74    77           77    +3
4    Chieftain's Shield   4    60.0    4    15.00    2.0   65    82           82    +17
5    Gold De Grace        4    60.0    5    16.50    2.0   60    82           82    +22
6    Pass The Baton       4    56.5    6    21.50    2.0   62    75           75    +13
7    Yojimbo              3    60.0    7    23.75    4.5   74    77           77    +3
8    Alakanani            4    60.0    8    27.00    2.0   54    82           82    +28
9    Urquhart Castle      4    60.0    9    27.75    2.0   -     82           82    +82
10   Stop The Traffic     4    60.0    10   99.99    2.0   55    82           82    +27
11   Sovereign Crown      3    60.0    11   99.99    4.5   68    77           77    +9
12   Umhlanga             3    60.0    12   99.99    4.5   62    77           77    +15
13   River Kitten         3    60.0    13   99.99    4.5   -     77           77    +77
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Huehuetenango 73 84 77 +7 4.5 -
2 Instant Attraction Line 73 60 73 -13 4.5
3 Royal Miracle 74 66 77 -11 4.5 -
4 Chieftain's Shield 65 80 82 -2 2.0 -
5 Gold De Grace 60 51 82 -31 2.0 -
6 Pass The Baton 62 48 75 -27 2.0 -
7 Yojimbo 74 72 77 -5 4.5 -
8 Alakanani 54 59 82 -23 2.0 -
9 Urquhart Castle - 37 82 -45 2.0 -
10 Stop The Traffic 55 65 82 -17 2.0 -
11 Sovereign Crown 68 68 77 -9 4.5 -
12 Umhlanga 62 62 77 -15 4.5 -
13 River Kitten - 50 77 -27 4.5 -
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