Official NHA Assessment

Race 4: TAB 4RACING APP CLASSIFIED STAKES (For horses with nett rating of 74 and below)

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Line Horse
Home Reef
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
2 / 10
Within 2 points
Significant Diffs
6 / 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    Slainte Mhath        4    60.0    1    0.00     1.5   71    81           77    +6
2    San Quintin          6    56.0    2    2.25     0.0   59    81           81    +22
3    Home Reef            3    58.0    3    2.75     4.5   74    74           74    +0
4    Euphoric             6    56.0    4    5.25     0.0   68    76           76    +8
5    Gardener's Pride     3    56.0    5    5.75     4.5   68    67           67    -1
6    Reach Forthe Stars   5    56.0    6    10.00    0.0   59    76           76    +17
7    Head Gardener        3    60.0    7    10.25    4.5   67    75           75    +8
8    Haarlem              3    60.0    8    11.00    4.5   77    75           75    -2
9    Rainbow Of Roses     3    56.5    9    11.50    4.5   70    68           68    -2
99   Oranjemund           4    58.0    99   0.00     1.5   -     77           77    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Slainte Mhath 71 81 77 +4 1.5 -
2 San Quintin 59 58 81 -23 0.0 -
3 Home Reef Line 74 87 74 +13 4.5
4 Euphoric 68 62 76 -14 0.0 -
5 Gardener's Pride 68 63 67 -4 4.5 -
6 Reach Forthe Stars 59 56 76 -20 0.0 -
7 Head Gardener 67 66 75 -9 4.5 -
8 Haarlem 77 73 75 -2 4.5 -
9 Rainbow Of Roses 70 66 68 -2 4.5 -
99 Oranjemund - 63 77 -14 1.5 -
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