Official NHA Assessment

Race 6: GG GAMING FM 76 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Boom Boom
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 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    Zenobia's Gold       3    59.0    1    0.00     1.0   76    73           76    +0
2    Across The Pond      2    56.0    2    0.40     0.0   87    74           77    -10
3    Honorable Member     3    54.0    3    1.20     1.0   82    67           72    -10
4    Boom Boom            4    56.0    4    2.50     0.5   70    70           70    +0
5    Quiet Rebellion      3    59.5    5    4.25     1.0   75    75           75    +0
6    Jj's Eagle           2    56.5    6    5.25     0.0   71    70           70    -1
7    Countess Danza       5    53.5    7    8.50     0.0   63    64           64    +1
8    Sneak Preview        3    57.0    8    11.25    1.0   72    69           69    -3
9    Last Ginger          4    57.0    9    13.75    0.5   75    70           70    -5
99   Darling Harbour      4    60.5    99   0.00     0.5   -     77           77    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Zenobia's Gold 76 79 76 +3 1.0 -
2 Across The Pond 87 87 77 +10 0.0 -
3 Honorable Member 82 88 72 +16 1.0 -
4 Boom Boom Line 70 81 70 +11 0.5
5 Quiet Rebellion 75 74 75 -1 1.0 -
6 Jj's Eagle 71 57 70 -13 0.0 -
7 Countess Danza 63 51 64 -13 0.0 -
8 Sneak Preview 72 63 69 -6 1.0 -
9 Last Ginger 75 64 70 -6 0.5 -
99 Darling Harbour - 60 77 -17 0.5 -
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