Official NHA Assessment

Race 4: RACING TODAY MAIDEN PLATE (F & M) (For Maiden F & M. R15 000 Win bonus ROA Members)

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Line Horse
Tana Maree
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
8 / 10
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    Heavyliesthecrown    3    60.0    1    0.00     3.5   -     74           6     +6
2    Tana Maree           4    60.0    2    3.00     4.0   73    73           73    +0
3    Shamoon              3    60.0    3    6.50     3.5   60    74           74    +14
4    Winds Of Grace       3    60.0    4    9.40     3.5   -     74           74    +74
5    Blue Quartz          4    60.0    5    9.50     4.0   65    73           73    +8
6    Bilingual            4    60.0    6    9.60     4.0   60    73           73    +13
7    Gimme A Storm        3    60.0    7    9.90     3.5   75    74           74    -1
8    Milo's Millionaire   3    60.0    8    23.00    3.5   70    74           74    +4
9    Sterling Silver      3    60.0    9    25.00    3.5   -     74           74    +74
99   Blazing Sky          3    60.0    99   0.00     3.5   -     74           74    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Heavyliesthecrown - 82 6 +76 3.5 -
2 Tana Maree Line 73 72 73 -1 4.0
3 Shamoon 60 67 74 -7 3.5 -
4 Winds Of Grace - 72 74 -2 3.5 -
5 Blue Quartz 65 62 73 -11 4.0 -
6 Bilingual 60 60 73 -13 4.0 -
7 Gimme A Storm 75 58 74 -16 3.5 -
8 Milo's Millionaire 70 66 74 -8 3.5 -
9 Sterling Silver - 50 74 -24 3.5 -
99 Blazing Sky - 46 74 -28 3.5 -
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