Official NHA Assessment

Race 4: FOR HOSPITALITY BOOKINGS CALL 011 681 1796 MAIDEN PLATE (F & M) (For Maiden F&M. R15 000 Win bonus ROA Members)

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Line Horse
Empressofnormandy
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
7 / 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    Dimako's Jet         4    59.0    1    0.00     2.5   -     73           6     +6
2    Sound Machine        3    59.0    2    1.75     4.0   67    73           73    +6
3    Empressofnormandy    3    59.0    3    2.00     4.0   73    73           73    +0
4    Volare E Mambo       4    59.0    4    2.75     2.5   -     75           75    +75
5    Follow The Sun       3    59.0    5    4.50     4.0   -     70           70    +70
6    Green Bubbles        2    60.0    6    4.75     0.0   57    80           80    +23
7    Golden Argo          3    55.0    7    6.25     4.0   -     62           62    +62
8    Kiss Of Fire         5    60.0    8    7.00     0.0   -     80           80    +80
9    Mary Read            3    59.0    9    9.75     4.0   -     70           70    +70
99   Chicago Lass         6    60.0    99   0.00     0.0   -     80           80    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dimako's Jet - 93 6 +87 2.5 -
2 Sound Machine 67 83 73 +10 4.0 -
3 Empressofnormandy Line 73 61 73 -12 4.0
4 Volare E Mambo - 76 75 +1 2.5 -
5 Follow The Sun - 68 70 -2 4.0 -
6 Green Bubbles 57 66 80 -14 0.0 -
7 Golden Argo - 61 62 -1 4.0 -
8 Kiss Of Fire - 68 80 -12 0.0 -
9 Mary Read - 57 70 -13 4.0 -
99 Chicago Lass - 43 80 -37 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