Official NHA Assessment

Race 3: RACING TODAY MAIDEN PLATE (For all Maidens)

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Line Horse
Chieftain's Shield
Reference for assessment
Exact Matches
0 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
8 / 12
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    Chieftain's Shield   4    60.0    1    0.00     0.5   68    68           68    +0
2    Radio Star           2    56.0    2    1.30     0.0   -     64           64    +64
3    Greenlight Racer     2    60.0    3    2.80     0.0   -     71           71    +71
4    Johnny Drama         3    60.0    4    6.55     1.0   75    67           67    -8
5    Talkoftheheights     2    52.0    5    9.05     0.0   -     53           53    +53
6    Jabberwocky          4    60.0    6    9.80     0.5   57    68           68    +11
7    Storm Burst          2    56.0    7    11.10    0.0   -     61           61    +61
8    Silver Longsword     3    60.0    8    13.70    1.0   -     67           67    +67
9    That's Magical       3    60.0    9    15.95    1.0   -     67           67    +67
10   Underdog             3    57.5    10   29.45    1.0   -     62           62    +62
11   Red Sea Hills        3    60.0    11   99.99    1.0   40    67           67    +27
99   Global Zee           2    60.0    99   0.00     0.0   -     69           69    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Chieftain's Shield Line 68 80 68 +12 0.5
2 Radio Star - 102 64 +38 0.0 -
3 Greenlight Racer - 75 71 +4 0.0 -
4 Johnny Drama 75 78 67 +11 1.0 -
5 Talkoftheheights - 52 53 -1 0.0 -
6 Jabberwocky 57 53 68 -15 0.5 -
7 Storm Burst - 63 61 +2 0.0 -
8 Silver Longsword - 74 67 +7 1.0 -
9 That's Magical - 54 67 -13 1.0 -
10 Underdog - 58 62 -4 1.0 -
11 Red Sea Hills 40 40 67 -27 1.0 -
99 Global Zee - 50 69 -19 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