Official NHA Assessment

Race 4: PLAY SOCCER 6, 10 AND 13 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 / 12
Calculated = Official
Close Matches
0 / 12
Within 2 points
Significant Diffs
12 / 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    Instant Attraction   3    56.5    1    0.00     4.5   72    72           72    +0
2    Heroic Act           3    57.5    2    0.75     4.5   62    80           80    +18
3    Chieftain's Shield   4    60.0    3    2.25     2.0   65    89           89    +24
4    Gift Of Royal        3    60.0    4    3.35     4.5   73    82           82    +9
5    Stop The Traffic     4    60.0    5    5.05     2.0   55    84           84    +29
6    Manz Knight          6    60.0    6    5.75     0.0   65    88           88    +23
7    Gold De Grace        4    60.0    7    7.00     2.0   60    84           84    +24
8    Pass The Baton       4    56.5    8    10.40    2.0   62    77           77    +15
9    Tibbott Bourke       4    60.0    9    10.50    2.0   62    84           84    +22
10   Battle Ofthe Bulge   4    60.0    10   11.75    2.0   -     84           84    +84
11   Beverly Baby         3    56.5    11   16.50    4.5   56    72           72    +16
12   Sky On Fire          4    56.0    12   99.99    2.0   61    76           76    +15
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Instant Attraction Line 72 60 72 -12 4.5
2 Heroic Act 62 65 80 -15 4.5 -
3 Chieftain's Shield 65 80 89 -9 2.0 -
4 Gift Of Royal 73 58 82 -24 4.5 -
5 Stop The Traffic 55 65 84 -19 2.0 -
6 Manz Knight 65 60 88 -28 0.0 -
7 Gold De Grace 60 51 84 -33 2.0 -
8 Pass The Baton 62 48 77 -29 2.0 -
9 Tibbott Bourke 62 51 84 -33 2.0 -
10 Battle Ofthe Bulge - 60 84 -24 2.0 -
11 Beverly Baby 56 53 72 -19 4.5 -
12 Sky On Fire 61 60 76 -16 2.0 -
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