Official NHA Assessment

Race 3: Star Merchant MAIDEN PLATE (For all Maidens)

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Line Horse
Pirate Prince
Reference for assessment
Exact Matches
0 / 13
Calculated = Official
Close Matches
0 / 13
Within 2 points
Significant Diffs
10 / 13
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    El Rey Viene         5    56.0    1    0.00     0.0   -     72           6     +6
2    Atlantic City        3    60.0    2    1.70     9.5   61    64           64    +3
3    Pirate Prince        2    54.5    3    2.10     0.0   72    72           72    +0
4    Cup Of Magic         3    60.0    4    6.10     9.5   65    61           61    -4
5    Gijima Mfana         6    60.0    5    8.00     0.0   42    80           80    +38
6    Agamemnon            3    56.0    6    10.00    9.5   -     53           53    +53
7    Direct Charge        3    53.5    7    12.50    9.5   -     48           48    +48
8    Soul Captain         2    56.0    8    14.90    0.0   68    72           72    +4
9    Prince Of Tides      3    56.0    9    16.40    9.5   -     53           53    +53
10   Roy's Bolt           3    56.0    10   17.20    9.5   38    53           53    +15
11   Set To Shine         3    56.0    11   18.90    9.5   -     53           53    +53
12   Blitzen              2    56.0    12   24.70    0.0   -     72           72    +72
13   One Man's Army       3    60.0    13   99.99    9.5   32    61           61    +29
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 El Rey Viene - 77 6 +71 0.0 -
2 Atlantic City 61 58 64 -6 9.5 -
3 Pirate Prince Line 72 94 72 +22 0.0
4 Cup Of Magic 65 58 61 -3 9.5 -
5 Gijima Mfana 42 50 80 -30 0.0 -
6 Agamemnon - 58 53 +5 9.5 -
7 Direct Charge - 59 48 +11 9.5 -
8 Soul Captain 68 59 72 -13 0.0 -
9 Prince Of Tides - 49 53 -4 9.5 -
10 Roy's Bolt 38 44 53 -9 9.5 -
11 Set To Shine - 30 53 -23 9.5 -
12 Blitzen - 57 72 -15 0.0 -
13 One Man's Army 32 32 61 -29 9.5 -
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