Official NHA Assessment

Race 3: www.galloptv.co.za MR 69 HANDICAP (Open)

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Line Horse
Gimme A Rainbow
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
8 / 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    Purple Operator      3    59.5    1    0.00     6.0   68    75           68    +0
2    Movie Magic          6    53.0    2    0.25     0.0   55    74           74    +19
3    Preemptive Strike    4    57.5    3    0.45     7.0   67    69           69    +2
4    Gimme A Rainbow      4    58.0    4    1.05     7.0   70    70           70    +0
5    Saipan               5    53.0    5    1.35     0.0   54    74           74    +20
6    Funky Music          4    58.0    6    1.60     7.0   65    70           70    +5
7    Brave Voyager        3    53.5    7    3.10     6.0   55    63           63    +8
8    Geronimo             4    55.5    8    6.10     7.0   65    65           65    +0
9    Thunder Masala       3    59.5    9    6.30     6.0   68    75           75    +7
99   Gunsmoke             3    55.5    99   0.00     6.0   -     67           67    +0
99   Firu Star            3    57.0    99   0.00     6.0   -     70           70    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Purple Operator 68 74 68 +6 6.0 -
2 Movie Magic 55 56 74 -18 0.0 -
3 Preemptive Strike 67 70 69 +1 7.0 -
4 Gimme A Rainbow Line 70 74 70 +4 7.0
5 Saipan 54 52 74 -22 0.0 -
6 Funky Music 65 83 70 +13 7.0 -
7 Brave Voyager 55 51 63 -12 6.0 -
8 Geronimo 65 50 65 -15 7.0 -
9 Thunder Masala 68 50 75 -25 6.0 -
99 Gunsmoke - 68 67 +1 6.0 -
99 Firu Star - 53 70 -17 6.0 -
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