Official NHA Assessment

Race 8: NEXT VAAL RACEMEETING TUESDAY 15 FEBRUARY MR 80 HANDICAP (Open)

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Line Horse
Written In Stone
Reference for assessment
Exact Matches
0 / 15
Calculated = Official
Close Matches
4 / 15
Within 2 points
Significant Diffs
8 / 15
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    Sound Of Hounds      3    52.5    1    0.00     3.0   72    58           72    +0
2    Tambora              5    54.5    2    1.25     0.0   69    72           72    +3
3    Written In Stone     9    57.0    3    3.50     0.0   74    74           74    +0
4    Excellarator         3    53.5    4    4.25     3.0   74    61           64    -10
5    Moya Wa Laliga       3    57.0    5    5.25     3.0   81    67           71    -10
6    Raisetheredlantern   4    53.5    6    6.00     2.0   67    62           62    -5
7    Waqaas (AUS)         6    55.5    7    7.00     0.0   76    70           70    -6
8    Tokyo Drift          10   55.5    8    7.50     0.0   71    70           70    -1
9    Euro Cent            4    60.0    9    8.00     2.0   80    75           75    -5
10   Rock The Globe       5    61.0    10   8.25     0.0   82    81           81    -1
11   Tallinn              5    55.5    11   9.25     0.0   71    70           70    -1
12   Southern Blaze       3    56.5    12   12.50    3.0   80    66           70    -10
99   Midnight Caller      4    57.5    99   0.00     2.0   -     70           70    +0
99   Lone Survivor        7    60.0    99   0.00     0.0   -     79           79    +0
99   Tillieangus          5    56.5    99   0.00     0.0   -     72           72    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Sound Of Hounds 72 80 72 +8 3.0 -
2 Tambora 69 69 72 -3 0.0 -
3 Written In Stone Line 74 67 74 -7 0.0
4 Excellarator 74 60 64 -4 3.0 -
5 Moya Wa Laliga 81 81 71 +10 3.0 -
6 Raisetheredlantern 67 64 62 +2 2.0 -
7 Waqaas (AUS) 76 56 70 -14 0.0 -
8 Tokyo Drift 71 71 70 +1 0.0 -
9 Euro Cent 80 80 75 +5 2.0 -
10 Rock The Globe 82 79 81 -2 0.0 -
11 Tallinn 71 63 70 -7 0.0 -
12 Southern Blaze 80 89 70 +19 3.0 -
99 Midnight Caller - 77 70 +7 2.0 -
99 Lone Survivor - 80 79 +1 0.0 -
99 Tillieangus - 65 72 -7 0.0 -
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