Official NHA Assessment

Race 5: THE GEYSER SHOP FM 71 HANDICAP (F & M) (For Fillies and Mares)

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Line Horse
Rafeef's Choice
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
6 / 11
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    Jazz Cafe            3    60.0    1    0.00     2.5   77    64           77    +0
2    Questo E Quello      3    60.0    2    1.70     2.5   77    67           67    -10
3    Blue Horizon         4    58.0    3    2.00     1.5   76    65           66    -10
4    Rafeef's Choice      5    60.5    4    2.30     0.0   72    72           72    +0
5    Miss Gibson          3    56.5    5    2.70     2.5   64    59           59    -5
6    Devils And Dust      2    54.0    6    3.60     0.0   59    58           58    -1
7    Fort J'adore         3    61.0    7    4.90     2.5   73    66           66    -7
8    Thesupernovastar     3    60.0    8    5.20     2.5   77    64           67    -10
9    Alittlebitnaughty    4    57.0    9    5.25     1.5   65    60           60    -5
10   Flower Festival      4    52.5    10   5.45     1.5   61    51           51    -10
11   Status Quo           3    60.0    11   10.65    2.5   77    64           67    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Jazz Cafe 77 82 77 +5 2.5 -
2 Questo E Quello 77 73 67 +6 2.5 -
3 Blue Horizon 76 84 66 +18 1.5 -
4 Rafeef's Choice Line 72 71 72 -1 0.0
5 Miss Gibson 64 56 59 -3 2.5 -
6 Devils And Dust 59 52 58 -6 0.0 -
7 Fort J'adore 73 67 66 +1 2.5 -
8 Thesupernovastar 77 56 67 -11 2.5 -
9 Alittlebitnaughty 65 62 60 +2 1.5 -
10 Flower Festival 61 70 51 +19 1.5 -
11 Status Quo 77 58 67 -9 2.5 -
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