Official NHA Assessment

Race 2: TAB TELEBET 0861 000 822 CLASSIFIED STAKES (For horses with nett rating of 71 and below)

Back to Race
Line Horse
Sir Tallin
Reference for assessment
Exact Matches
2 / 7
Calculated = Official
Close Matches
3 / 7
Within 2 points
Significant Diffs
4 / 7
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Blonde Act           3    56.0    1    0.00     10.0  63    63           63    +0
2    King Arthur          3    60.0    2    1.90     10.0  70    74           74    +4
3    Sir Tallin           3    58.5    3    2.60     10.0  70    70           70    +0
4    Kool Baikal          5    60.0    4    3.10     0.0   70    93           93    +23
5    Toto's Dream         3    55.5    5    3.40     10.0  67    63           63    -4
6    Pottinger            3    60.0    6    4.00     10.0  70    72           72    +2
7    Orus Apollo          4    54.0    7    14.50    7.0   50    65           65    +15
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Blonde Act 63 96 63 +33 10.0 -
2 King Arthur 70 68 74 -6 10.0 -
3 Sir Tallin Line 70 70 70 ✓ Match 10.0
4 Kool Baikal 70 67 93 -26 0.0 -
5 Toto's Dream 67 63 63 ✓ Match 10.0 -
6 Pottinger 70 70 72 -2 10.0 -
7 Orus Apollo 50 46 65 -19 7.0 -
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