Official NHA Assessment

Race 1: MAIDEN PLATE (Maiden Plate Colts & Geldings to carry)

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Line Horse
Cario
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
2 / 12
Within 2 points
Significant Diffs
6 / 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    Cha Vez              3    60.0    1    0.00     2.5   48    45           45    -3
2    Walker Bay           3    60.0    2    2.50     2.5   -     45           45    +45
3    Cario                4    60.0    3    6.50     0.0   50    50           50    +0
4    Karoo Winter         4    57.5    4    8.25     0.0   43    45           45    +2
5    Windsor Lane (ZIM)   4    57.5    5    9.25     0.0   -     45           45    +45
6    Ginjamatinja         3    60.0    6    10.25    2.5   52    45           45    -7
7    Ride The Lights      3    57.5    7    11.00    2.5   41    40           40    -1
8    Empress Of Jade      3    57.5    8    12.00    2.5   67    40           57    -10
9    State Your Case      3    60.0    9    12.75    2.5   48    45           45    -3
10   Bruce's Spirit       6    60.0    10   14.50    0.0   58    50           50    -8
11   Dunstealmythunda     3    60.0    11   25.50    2.5   54    45           45    -9
12   Johnny Chifamba      3    60.0    12   99.00    2.5   34    45           45    +11
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cha Vez 48 55 45 +10 2.5 -
2 Walker Bay - 59 45 +14 2.5 -
3 Cario Line 50 41 50 -9 0.0
4 Karoo Winter 43 56 45 +11 0.0 -
5 Windsor Lane (ZIM) - 49 45 +4 0.0 -
6 Ginjamatinja 52 45 45 ✓ Match 2.5 -
7 Ride The Lights 41 38 40 -2 2.5 -
8 Empress Of Jade 67 73 57 +16 2.5 -
9 State Your Case 48 40 45 -5 2.5 -
10 Bruce's Spirit 58 55 50 +5 0.0 -
11 Dunstealmythunda 54 49 45 +4 2.5 -
12 Johnny Chifamba 34 34 45 -11 2.5 -
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