Official NHA Assessment

Race 5: RACEHORSE OWNERS ASSOCIATION PINNACLE STAKES (For all horses)

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Line Horse
Grazinginthegrass
Reference for assessment
Exact Matches
2 / 11
Calculated = Official
Close Matches
2 / 11
Within 2 points
Significant Diffs
6 / 11
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    Cherry Ano           5    62.0    1    0.00     0.0   110   112          112   +2
2    Grazinginthegrass    4    62.0    2    0.10     0.5   111   111          111   +0
3    Bush Tracker         6    62.0    3    3.85     0.0   107   113          113   +6
4    Mount Anderson       8    57.0    4    5.35     0.0   101   102          102   +1
5    Rose Of Bayeux       3    53.5    5    6.85     2.0   90    91           91    +1
6    Global Ally          6    59.5    6    6.95     0.0   100   107          107   +7
7    Mhlabeni             7    59.5    7    9.20     0.0   99    107          107   +8
8    Fateful Day          3    56.5    8    9.25     2.0   86    97           97    +11
9    Crimson Princess     4    55.0    9    9.50     0.5   95    97           97    +2
10   Kingdom Of Heaven    5    53.5    10   15.00    0.0   80    95           95    +15
11   You Know Who         3    58.0    11   19.75    2.0   91    100          100   +9
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Cherry Ano 110 108 112 -4 0.0 -
2 Grazinginthegrass Line 111 111 111 ✓ Match 0.5
3 Bush Tracker 107 100 113 -13 0.0 -
4 Mount Anderson 101 102 102 ✓ Match 0.0 -
5 Rose Of Bayeux 90 77 91 -14 2.0 -
6 Global Ally 100 97 107 -10 0.0 -
7 Mhlabeni 99 90 107 -17 0.0 -
8 Fateful Day 86 93 97 -4 2.0 -
9 Crimson Princess 95 102 97 +5 0.5 -
10 Kingdom Of Heaven 80 79 95 -16 0.0 -
11 You Know Who 91 91 100 -9 2.0 -
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