Official NHA Assessment

Race 2: GOLD CIRCLE RACING YOUTUBE CHANNEL MAIDEN PLATE (For all Maidens)

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Line Horse
Tibbott Bourke
Reference for assessment
Exact Matches
2 / 14
Calculated = Official
Close Matches
4 / 14
Within 2 points
Significant Diffs
9 / 14
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    Attaboy              2    54.0    1    0.00     0.0   71    -4           -     -71
2    Querari's Dream      2    60.0    2    0.90     0.0   -     12           12    +12
3    Nightjar             3    58.0    3    1.40     6.0   -     -5           -     +0
4    Specmagic            3    58.0    4    2.00     6.0   -     -5           -     +0
5    Tibbott Bourke       4    58.0    5    2.10     3.5   -     -            -     +0
6    Champonelle          4    56.5    6    3.00     3.5   81    -4           71    -10
7    Race Against Time    4    60.0    7    3.30     3.5   -     2            2     +2
8    Mazatlan             3    60.0    8    3.70     6.0   58    -3           48    -10
9    Heart Of Thieves     4    60.0    9    4.00     3.5   70    2            60    -10
10   Lashlaroo            3    58.0    10   5.90     6.0   80    -8           70    -10
11   Morning Chess        4    58.0    11   8.10     3.5   77    -3           67    -10
12   Doin' Time           5    60.0    12   13.10    0.0   64    8            54    -10
13   Mo King              2    54.0    13   15.70    0.0   76    -4           66    -10
14   Gorgeous Guy         2    58.0    14   20.00    0.0   84    4            74    -10
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Attaboy 71 65 - +65 0.0 -
2 Querari's Dream - 70 12 +58 0.0 -
3 Nightjar - 67 - +67 6.0 -
4 Specmagic - 70 - +70 6.0 -
5 Tibbott Bourke Line - 51 - +51 3.5
6 Champonelle 81 87 71 +16 3.5 -
7 Race Against Time - - 2 -2 3.5 -
8 Mazatlan 58 58 48 +10 6.0 -
9 Heart Of Thieves 70 45 60 -15 3.5 -
10 Lashlaroo 80 73 70 +3 6.0 -
11 Morning Chess 77 65 67 -2 3.5 -
12 Doin' Time 64 54 54 ✓ Match 0.0 -
13 Mo King 76 66 66 ✓ Match 0.0 -
14 Gorgeous Guy 84 81 74 +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