Official NHA Assessment

Race 1: SPLASHOUT MR 97 HANDICAP (Open)

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Line Horse
Ragnar Lothbrok
Reference for assessment
Exact Matches
0 / 10
Calculated = Official
Close Matches
1 / 10
Within 2 points
Significant Diffs
9 / 10
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    Dean Street          3    53.5    1    0.00     4.5   84    84           84    +0
2    Usa's Hope           2    53.5    2    0.10     3.0   90    87           87    -3
3    Barzalona            6    60.0    3    1.35     0.0   97    106          106   +9
4    Ragnar Lothbrok      3    52.5    4    1.75     4.5   82    82           82    +0
5    Double Charge        5    57.0    5    1.80     0.0   91    100          100   +9
6    Hammies Hero         2    55.5    6    1.85     3.0   94    91           91    -3
7    Captain Bombshell    2    58.5    7    3.10     3.0   100   97           97    -3
8    Mount Pleasant (AUS  4    60.0    8    3.30     5.0   97    96           96    -1
9    Proud Master         3    56.0    9    4.55     4.5   89    89           89    +0
10   Street Outlaw        5    56.5    10   5.30     0.0   96    99           99    +3
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Dean Street 84 102 84 +18 4.5 -
2 Usa's Hope 90 97 87 +10 3.0 -
3 Barzalona 97 66 106 -40 0.0 -
4 Ragnar Lothbrok Line 82 81 82 -1 4.5
5 Double Charge 91 80 100 -20 0.0 -
6 Hammies Hero 94 69 91 -22 3.0 -
7 Captain Bombshell 100 106 97 +9 3.0 -
8 Mount Pleasant (AUS) 97 71 96 -25 5.0 -
9 Proud Master 89 97 89 +8 4.5 -
10 Street Outlaw 96 78 99 -21 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