Official NHA Assessment

Race 3: GREYVILLE CONVENTION CENTRE MAIDEN PLATE (For all Maidens)

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Line Horse
Power Star
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
0 / 11
Within 2 points
Significant Diffs
10 / 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    Ultimate Jewel       5    60.0    1    0.00     0.0   71    69           69    -2
2    Power Star           2    60.0    2    1.20     0.0   73    73           73    +0
3    Fibonacci            2    56.0    3    1.25     0.0   -     65           65    +65
4    Hunters Arrow        2    58.5    4    3.85     0.0   62    67           67    +5
5    Venerable            3    60.0    5    4.15     2.0   65    66           66    +1
6    Majestic Reign       3    60.0    6    6.45     2.0   75    65           65    -10
7    Streetshavenoname    2    56.0    7    8.15     0.0   -     61           61    +61
8    Gijima Mfana         6    60.0    8    11.15    0.0   58    69           69    +11
9    Mighty Rain          3    60.0    9    13.35    2.0   -     65           65    +65
10   Terra Sante          3    60.0    10   13.45    2.0   58    65           65    +7
99   Gettysburg           3    58.5    99   0.00     2.0   -     62           62    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Ultimate Jewel 71 80 69 +11 0.0 -
2 Power Star Line 73 58 73 -15 0.0
3 Fibonacci - 73 65 +8 0.0 -
4 Hunters Arrow 62 54 67 -13 0.0 -
5 Venerable 65 62 66 -4 2.0 -
6 Majestic Reign 75 75 65 +10 2.0 -
7 Streetshavenoname - 70 61 +9 0.0 -
8 Gijima Mfana 58 50 69 -19 0.0 -
9 Mighty Rain - 46 65 -19 2.0 -
10 Terra Sante 58 53 65 -12 2.0 -
99 Gettysburg - 47 62 -15 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