Official NHA Assessment

Race 2: BETWAY MAIDEN PLATE (For all Maidens. R15 000 Win bonus ROA Members)

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Line Horse
Summer Shade
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
7 / 11
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    Pacific              4    60.0    1    0.00     11.0  65    61           61    -4
2    Kwagga Blitz         2    58.0    2    1.75     6.5   83    66           73    -10
3    Summer Shade         4    60.0    3    2.00     11.0  61    61           61    +0
4    Ringho               4    60.0    4    2.25     11.0  48    61           61    +13
5    Espinoza             3    58.0    5    2.65     9.5   -     60           60    +60
6    Potberrie            2    58.0    6    3.65     6.5   83    66           73    -10
7    Letona               3    58.0    7    8.90     9.5   -     60           60    +60
8    Rawalpindi           2    55.5    8    9.15     6.5   61    61           61    +0
9    Old Fashioned        3    58.0    9    10.15    9.5   -     60           60    +60
10   Scarlet              3    53.5    10   18.15    9.5   53    51           51    -2
99   The Real Deal        4    60.0    99   0.00     11.0  -     61           61    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Pacific 65 50 61 -11 11.0 -
2 Kwagga Blitz 83 79 73 +6 6.5 -
3 Summer Shade Line 61 52 61 -9 11.0
4 Ringho 48 60 61 -1 11.0 -
5 Espinoza - 97 60 +37 9.5 -
6 Potberrie 83 105 73 +32 6.5 -
7 Letona - 57 60 -3 9.5 -
8 Rawalpindi 61 62 61 +1 6.5 -
9 Old Fashioned - 76 60 +16 9.5 -
10 Scarlet 53 47 51 -4 9.5 -
99 The Real Deal - 50 61 -11 11.0 -
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