Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING TUESDAY 11 JANUARY FM 77 DIVIDED HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Rozara
Reference for assessment
Exact Matches
2 / 13
Calculated = Official
Close Matches
5 / 13
Within 2 points
Significant Diffs
8 / 13
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    Rozara               3    53.5    1    0.00     5.0   71    71           71    +0
2    Mercer Girl          6    48.0    2    1.75     0.0   53    70           70    +17
3    Allez Les Bleu (AUS  6    52.0    3    2.25     0.0   57    78           78    +21
4    On Cue               3    58.5    4    3.60     5.0   81    81           81    +0
5    Samoa                10   52.5    5    4.25     0.0   62    79           79    +17
6    Hear The Trumpet     6    53.0    6    4.30     0.0   63    80           80    +17
7    Verinova             4    55.5    7    4.50     6.0   68    73           73    +5
8    Gin And Tonic        3    56.0    8    5.50     5.0   76    76           76    +0
9    Stolen Kiss          3    58.0    9    5.55     5.0   80    80           80    +0
10   Veneta               3    53.5    10   6.25     5.0   71    71           71    +0
11   Captain's Run        3    59.5    11   8.25     5.0   83    83           83    +0
12   Bathing Beauty       3    60.0    12   11.25    5.0   84    84           84    +0
13   Vuitton              3    50.5    13   11.50    5.0   73    65           65    -8
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rozara Line 71 73 71 +2 5.0
2 Mercer Girl 53 53 70 -17 0.0 -
3 Allez Les Bleu (AUS) 57 58 78 -20 0.0 -
4 On Cue 81 81 81 ✓ Match 5.0 -
5 Samoa 62 64 79 -15 0.0 -
6 Hear The Trumpet 63 52 80 -28 0.0 -
7 Verinova 68 64 73 -9 6.0 -
8 Gin And Tonic 76 68 76 -8 5.0 -
9 Stolen Kiss 80 79 80 -1 5.0 -
10 Veneta 71 49 71 -22 5.0 -
11 Captain's Run 83 76 83 -7 5.0 -
12 Bathing Beauty 84 84 84 ✓ Match 5.0 -
13 Vuitton 73 63 65 -2 5.0 -
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