Official NHA Assessment

Race 4: BETWAY BACK THE BOKS MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Pocket Watch
Reference for assessment
Exact Matches
0 / 15
Calculated = Official
Close Matches
1 / 15
Within 2 points
Significant Diffs
12 / 15
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    Halberdier           4    58.0    1    0.00     11.0  84    73           70    -14
2    Pocket Watch         2    58.0    2    2.75     6.5   82    82           82    +0
3    Deception Pass       4    58.0    3    3.00     11.0  -     73           73    +73
4    Secret Chord         4    58.0    4    3.75     11.0  -     73           73    +73
5    Theres A Light       4    58.0    5    8.50     11.0  -     73           73    +73
6    To The King          3    60.0    6    9.00     9.5   72    80           80    +8
7    Guardia Regine       3    58.0    7    9.50     9.5   -     76           76    +76
8    Tropical Storm       3    58.0    8    11.00    9.5   -     76           76    +76
9    Act Of Power         3    58.0    9    11.25    9.5   -     76           76    +76
10   Crown Prince         3    60.0    10   12.00    9.5   55    80           80    +25
11   And Action           4    58.0    11   12.75    11.0  -     73           73    +73
12   Keiras Ranger        2    58.0    12   13.75    6.5   53    82           82    +29
13   Heart Of Thieves     4    60.0    13   15.50    11.0  75    77           77    +2
14   Majestic Palace      3    58.0    14   30.00    9.5   -     76           76    +76
15   Triskelion           2    58.0    15   33.00    6.5   -     82           82    +82
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Halberdier 84 83 70 +13 11.0 -
2 Pocket Watch Line 82 83 82 +1 6.5
3 Deception Pass - 77 73 +4 11.0 -
4 Secret Chord - 92 73 +19 11.0 -
5 Theres A Light - 76 73 +3 11.0 -
6 To The King 72 66 80 -14 9.5 -
7 Guardia Regine - 67 76 -9 9.5 -
8 Tropical Storm - 57 76 -19 9.5 -
9 Act Of Power - 50 76 -26 9.5 -
10 Crown Prince 55 50 80 -30 9.5 -
11 And Action - 62 73 -11 11.0 -
12 Keiras Ranger 53 64 82 -18 6.5 -
13 Heart Of Thieves 75 45 77 -32 11.0 -
14 Majestic Palace - 90 76 +14 9.5 -
15 Triskelion - - 82 -82 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