Official NHA Assessment

Race 3: TAB 4RACING APP OPEN MAIDEN (F & M) (For all Maiden F&M)

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Line Horse
Cheap Thrills
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
0 / 10
Within 2 points
Significant Diffs
8 / 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    Preserve Forever     3    58.0    1    0.00     10.0  57    42           42    -15
2    Cheap Thrills        4    56.0    2    0.50     7.0   51    51           51    +0
3    Welsh Starlet        3    58.5    3    2.75     10.0  58    46           48    -10
4    Global Scene         2    61.0    4    3.25     0.0   63    71           71    +8
5    Free To Run          2    57.0    5    8.00     0.0   -     60           60    +60
6    Darling Girl         2    57.0    6    8.25     0.0   55    60           60    +5
7    Go Dancing           3    56.0    7    9.50     10.0  53    38           43    -10
8    Vino Rioja           2    54.5    8    11.75    0.0   67    55           57    -10
9    Amiok                2    50.0    9    45.75    0.0   64    46           54    -10
99   Cedarpeak            3    53.0    99   0.00     10.0  -     32           32    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Preserve Forever 57 53 42 +11 10.0 -
2 Cheap Thrills Line 51 56 51 +5 7.0
3 Welsh Starlet 58 63 48 +15 10.0 -
4 Global Scene 63 61 71 -10 0.0 -
5 Free To Run - 68 60 +8 0.0 -
6 Darling Girl 55 54 60 -6 0.0 -
7 Go Dancing 53 50 43 +7 10.0 -
8 Vino Rioja 67 60 57 +3 0.0 -
9 Amiok 64 64 54 +10 0.0 -
99 Cedarpeak - 50 32 +18 10.0 -
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