Official NHA Assessment

Race 1: #THISISRACING WELCOMES YOU WORK RIDERS MAIDEN PLATE (F & M) (For Maiden Fillies and Mares)

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Line Horse
Mandalay
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
10 / 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    Don't Tell Ash       2    58.0    1    0.00     6.5   69    62           62    -7
2    Solo Diva            3    58.0    2    1.00     9.5   -     56           56    +56
3    Mandalay             3    60.0    3    2.50     9.5   60    60           60    +0
4    Wilkies              2    58.0    4    3.80     6.5   71    62           62    -9
5    Lady Chocolat        2    58.0    5    5.80     6.5   62    62           62    +0
6    Regina Bellissima    2    58.0    6    6.30     6.5   80    62           70    -10
7    Treaty               2    58.0    7    6.80     6.5   64    62           62    -2
8    Roxie In Seattle     4    60.0    8    9.05     11.0  -     57           57    +57
9    Quick Quick          4    60.0    9    11.80    11.0  -     57           57    +57
99   Agia Sofia           3    60.0    99   0.00     9.5   -     60           60    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Don't Tell Ash 69 75 62 +13 6.5 -
2 Solo Diva - 65 56 +9 9.5 -
3 Mandalay Line 60 53 60 -7 9.5
4 Wilkies 71 50 62 -12 6.5 -
5 Lady Chocolat 62 54 62 -8 6.5 -
6 Regina Bellissima 80 58 70 -12 6.5 -
7 Treaty 64 48 62 -14 6.5 -
8 Roxie In Seattle - - 57 -57 11.0 -
9 Quick Quick - 29 57 -28 11.0 -
99 Agia Sofia - 24 60 -36 9.5 -
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