Official NHA Assessment

Race 4: TRACK & BALL GAMING FM 70 HANDICAP (F & M) (For Fillies and Mares)

Back to Race
Line Horse
Princess Jo
Reference for assessment
Exact Matches
1 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
7 / 11
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Family Favourite     3    60.0    1    0.00     4.0   70    77           70    +0
2    Valerias Dream       3    58.5    2    1.30     4.0   75    77           77    +2
3    Princess Jo          3    60.0    3    3.60     4.0   78    78           78    +0
4    Bell Starbuster      4    49.5    4    3.85     2.0   52    61           61    +9
5    Natalia              2    55.0    5    4.15     0.0   71    76           76    +5
6    Mystic Angel         2    59.0    6    5.05     0.0   76    83           83    +7
7    Meredith Grey        2    53.5    7    6.65     0.0   68    72           72    +4
8    Girl Of Tregunter    2    57.5    8    8.45     0.0   73    80           80    +7
9    Badrah (AUS)         4    52.5    9    10.95    2.0   54    66           66    +12
10   Mysterious Girl      2    56.0    10   13.15    0.0   70    77           77    +7
99   Sea Eagle            3    61.5    99   0.00     4.0   -     80           80    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Family Favourite 70 69 70 -1 4.0 -
2 Valerias Dream 75 77 77 ✓ Match 4.0 -
3 Princess Jo Line 78 77 78 -1 4.0
4 Bell Starbuster 52 52 61 -9 2.0 -
5 Natalia 71 50 76 -26 0.0 -
6 Mystic Angel 76 69 83 -14 0.0 -
7 Meredith Grey 68 68 72 -4 0.0 -
8 Girl Of Tregunter 73 63 80 -17 0.0 -
9 Badrah (AUS) 54 56 66 -10 2.0 -
10 Mysterious Girl 70 69 77 -8 0.0 -
99 Sea Eagle - 68 80 -12 4.0 -
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