Official NHA Assessment

Race 7: BETONTAB.CO.ZA MR 86 HANDICAP (Open)

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Line Horse
Mo Jive
Reference for assessment
Exact Matches
2 / 10
Calculated = Official
Close Matches
3 / 10
Within 2 points
Significant Diffs
7 / 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    Trident King         3    59.5    1    0.00     2.5   85    82           85    +0
2    Bloomington          3    57.0    2    1.60     2.5   80    80           80    +0
3    Mo Jive              2    57.0    3    2.10     0.0   85    85           85    +0
4    Stratospheric        2    60.5    4    5.25     0.0   92    89           89    -3
5    Youcanthurrylove     5    59.5    5    9.50     0.0   85    87           87    +2
6    Southern Blaze       3    56.5    6    10.75    2.5   79    76           76    -3
7    Sequoia              6    56.5    7    13.00    0.0   79    81           81    +2
8    Earl                 4    56.0    8    18.00    1.0   78    78           78    +0
9    Lee Express          4    56.5    9    19.00    1.0   84    79           79    -5
10   City By The Sea      4    59.0    10   28.00    1.0   89    84           84    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Trident King 85 65 85 -20 2.5 -
2 Bloomington 80 69 80 -11 2.5 -
3 Mo Jive Line 85 78 85 -7 0.0
4 Stratospheric 92 97 89 +8 0.0 -
5 Youcanthurrylove 85 86 87 -1 0.0 -
6 Southern Blaze 79 89 76 +13 2.5 -
7 Sequoia 79 99 81 +18 0.0 -
8 Earl 78 78 78 ✓ Match 1.0 -
9 Lee Express 84 79 79 ✓ Match 1.0 -
10 City By The Sea 89 74 84 -10 1.0 -
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