Official NHA Assessment

Race 7: RACEHORSE OWNERS ASSOCIATION GRADUATION PLATE (F & M) (For 1 & 2 Time Winners & Maidens (F & M))

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Line Horse
Aga Heat
Reference for assessment
Exact Matches
0 / 8
Calculated = Official
Close Matches
0 / 8
Within 2 points
Significant Diffs
8 / 8
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    Aga Heat             3    60.0    1    0.00     6.0   80    80           80    +0
2    Westwing Belter      7    55.0    2    5.50     0.0   51    82           82    +31
3    Whatyouwaitingfor    2    53.0    3    6.00     4.0   85    70           75    -10
4    Glittering Girl      2    57.0    4    8.50     4.0   114   78           104   -10
5    Blindedbythelights   2    56.5    5    14.75    4.0   98    77           88    -10
99   Insatiable           3    60.0    99   0.00     6.0   -     80           80    +0
99   In The Beginning     3    57.0    99   0.00     6.0   -     74           74    +0
99   Antigua Night        2    56.5    99   0.00     4.0   -     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 Aga Heat Line 80 74 80 -6 6.0
2 Westwing Belter 51 54 82 -28 0.0 -
3 Whatyouwaitingfor 85 66 75 -9 4.0 -
4 Glittering Girl 114 114 104 +10 4.0 -
5 Blindedbythelights 98 51 88 -37 4.0 -
99 Insatiable - 62 80 -18 6.0 -
99 In The Beginning - 91 74 +17 6.0 -
99 Antigua Night - 97 77 +20 4.0 -
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