Official NHA Assessment

Race 3: RACING TODAY OPEN MAIDEN (F & M) (For all Maiden F&M. R15 000 Win Bonus ROA Members)

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Line Horse
Ruby Claire
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
6 / 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    Fire Alarm           3    57.0    1    0.00     3.0   73    72           72    -1
2    Ruby Claire          3    54.0    2    0.25     3.0   66    66           66    +0
3    Beach Queen          3    52.5    3    0.75     3.0   64    67           67    +3
4    Hat Montera          3    51.5    4    1.25     3.0   53    65           65    +12
5    Global Scene         2    56.0    5    2.50     0.0   71    78           78    +7
6    Maxigirl             3    54.5    6    2.55     3.0   68    69           69    +1
7    Springsteen          3    61.0    7    7.55     3.0   -     80           80    +80
8    Princess Beautiful   3    56.0    8    8.55     3.0   71    70           70    -1
99   Dancing In Winter    4    54.0    99   0.00     2.0   -     68           68    +0
99   Extraction           2    55.0    99   0.00     0.0   -     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 Fire Alarm 73 70 72 -2 3.0 -
2 Ruby Claire Line 66 52 66 -14 3.0
3 Beach Queen 64 66 67 -1 3.0 -
4 Hat Montera 53 81 65 +16 3.0 -
5 Global Scene 71 61 78 -17 0.0 -
6 Maxigirl 68 61 69 -8 3.0 -
7 Springsteen - 62 80 -18 3.0 -
8 Princess Beautiful 71 66 70 -4 3.0 -
99 Dancing In Winter - 70 68 +2 2.0 -
99 Extraction - 54 74 -20 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