Official NHA Assessment

Race 4: WWW.TAB4RACING.COM MIDDLE STAKES (For horses with nett rating of 101 and below)

Back to Race
Line Horse
Ampersand
Reference for assessment
Exact Matches
0 / 9
Calculated = Official
Close Matches
1 / 9
Within 2 points
Significant Diffs
7 / 9
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Sea Anemone          5    52.5    1    0.00     0.0   83    99           89    +6
2    Cosmic Star          3    56.0    2    0.20     7.5   88    91           91    +3
3    Silver Tudor         5    58.0    3    1.80     0.0   90    110          110   +20
4    Ampersand            2    52.0    4    3.10     5.0   88    88           88    +0
5    Midnight Gem         4    58.5    5    3.30     9.0   95    93           93    -2
6    Argo Alley           2    60.0    6    4.50     5.0   94    104          104   +10
7    Samuel Salt          3    52.0    7    6.75     7.5   89    83           83    -6
8    Goliath Heron        6    54.5    8    7.00     0.0   88    103          103   +15
9    Bold Act             3    60.5    9    15.00    7.5   98    100          100   +2
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sea Anemone 83 81 89 -8 0.0 -
2 Cosmic Star 88 105 91 +14 7.5 -
3 Silver Tudor 90 99 110 -11 0.0 -
4 Ampersand Line 88 83 88 -5 5.0
5 Midnight Gem 95 81 93 -12 9.0 -
6 Argo Alley 94 110 104 +6 5.0 -
7 Samuel Salt 89 82 83 -1 7.5 -
8 Goliath Heron 88 86 103 -17 0.0 -
9 Bold Act 98 77 100 -23 7.5 -
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