Official NHA Assessment

Race 9: RACEHORSE OWNERS ASSOCIATION CLASSIFIED STAKES (For horses with nett rating of 75 and below)

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Line Horse
Timbavati River
Reference for assessment
Exact Matches
0 / 15
Calculated = Official
Close Matches
5 / 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    Calibre Crest        3    60.0    1    0.00     2.5   75    73           73    -2
2    Batik                3    49.5    2    1.25     2.5   62    56           56    -6
3    Suryavarman          2    56.0    3    3.75     0.0   70    71           71    +1
4    Waqaas (AUS)         6    58.0    4    3.85     0.0   71    75           75    +4
5    Timbavati River      3    54.0    5    6.50     2.5   61    61           61    +0
6    Coming In Hot        3    56.0    6    6.75     2.5   65    65           65    +0
7    In Cahoots           6    60.0    7    8.75     0.0   74    78           78    +4
8    Arden Park           3    52.5    8    8.85     2.5   64    58           58    -6
9    Welcome Breeze       2    54.5    9    8.95     0.0   72    67           67    -5
10   Sacred Valley        3    50.0    10   10.20    2.5   51    53           53    +2
11   Gilda Gray           3    52.5    11   11.50    2.5   60    58           58    -2
12   Linganomore          3    56.0    12   12.50    2.5   69    65           65    -4
13   Eagle Strike         3    60.0    13   15.50    2.5   73    73           73    +0
99   Fog Bank             2    58.0    99   0.00     0.0   -     74           74    +0
99   High Born Lady       4    58.0    99   0.00     1.5   -     71           71    +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Calibre Crest 75 74 73 +1 2.5 -
2 Batik 62 57 56 +1 2.5 -
3 Suryavarman 70 84 71 +13 0.0 -
4 Waqaas (AUS) 71 56 75 -19 0.0 -
5 Timbavati River Line 61 79 61 +18 2.5
6 Coming In Hot 65 76 65 +11 2.5 -
7 In Cahoots 74 54 78 -24 0.0 -
8 Arden Park 64 53 58 -5 2.5 -
9 Welcome Breeze 72 68 67 +1 0.0 -
10 Sacred Valley 51 44 53 -9 2.5 -
11 Gilda Gray 60 64 58 +6 2.5 -
12 Linganomore 69 73 65 +8 2.5 -
13 Eagle Strike 73 69 73 -4 2.5 -
99 Fog Bank - 75 74 +1 0.0 -
99 High Born Lady - 72 71 +1 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