Official NHA Assessment

Race 2: WSB GRAND HERITAGE 09 DECEMBER MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Thomas Rainwater
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
8 / 11
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    Just Nuisance        2    58.0    1    0.00     0.0   84    70           70    -14
2    Officer In Command   4    58.0    2    3.50     4.0   -     63           63    +63
3    Thomas Rainwater     2    58.0    3    6.25     0.0   70    70           70    +0
4    To The Rescue        4    58.0    4    6.50     4.0   -     62           62    +62
5    Well Loved           3    58.0    5    6.75     7.0   -     56           56    +56
6    La Moohal            4    58.0    6    9.25     4.0   -     62           62    +62
7    Master Tik Tok       5    60.0    7    10.25    0.0   -     74           74    +74
8    Captain Barbosa      3    58.0    8    10.75    7.0   59    56           56    -3
9    Lt Alexander         2    56.5    9    18.00    0.0   70    67           67    -3
10   Mr Blue Flame        3    58.0    10   19.00    7.0   50    56           56    +6
11   Keiras Ranger        2    58.0    11   21.50    0.0   66    70           70    +4
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Just Nuisance 84 85 70 +15 0.0 -
2 Officer In Command - 86 63 +23 4.0 -
3 Thomas Rainwater Line 70 58 70 -12 0.0
4 To The Rescue - 82 62 +20 4.0 -
5 Well Loved - 68 56 +12 7.0 -
6 La Moohal - 93 62 +31 4.0 -
7 Master Tik Tok - 80 74 +6 0.0 -
8 Captain Barbosa 59 52 56 -4 7.0 -
9 Lt Alexander 70 72 67 +5 0.0 -
10 Mr Blue Flame 50 59 56 +3 7.0 -
11 Keiras Ranger 66 64 70 -6 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