Official NHA Assessment

Race 8: HKJC WORLD POOL TIBOUCHINA STAKES (Grade 2) (Fillies and Mares at Weight For Age + Penalties)

Back to Race
Line Horse
Oxalis Gold
Reference for assessment
Exact Matches
2 / 13
Calculated = Official
Close Matches
5 / 13
Within 2 points
Significant Diffs
7 / 13
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    Green Sapphire       3    58.5    1    0.00     1.0   104   103          103   -1
2    Callmegetrix         4    60.0    2    0.40     0.5   99    112          112   +13
3    Minogue              4    60.0    3    0.45     0.5   107   112          112   +5
4    Oxalis Gold          3    58.5    4    0.75     1.0   107   107          107   +0
5    Sovereign Grant      4    60.0    5    1.25     0.5   99    111          111   +12
6    Sonic Jet            3    58.5    6    1.30     1.0   95    106          106   +11
7    Scarlet Macaw        2    58.5    7    1.35     0.0   110   108          108   -2
8    Sohot Sowhat         3    58.5    8    1.75     1.0   94    106          106   +12
9    Lucrative            2    58.5    9    2.05     0.0   101   108          108   +7
10   Bevies Delight       5    60.0    10   2.65     0.0   101   110          110   +9
11   Be Merry             2    58.5    11   3.85     0.0   110   106          106   -4
12   Magical View         3    58.5    12   4.10     1.0   96    104          104   +8
99   Summer Lily          2    60.0    99   0.00     0.0   -     108          108   +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Green Sapphire 104 109 103 +6 1.0 -
2 Callmegetrix 99 113 112 +1 0.5 -
3 Minogue 107 112 112 ✓ Match 0.5 -
4 Oxalis Gold Line 107 107 107 ✓ Match 1.0
5 Sovereign Grant 99 92 111 -19 0.5 -
6 Sonic Jet 95 101 106 -5 1.0 -
7 Scarlet Macaw 110 107 108 -1 0.0 -
8 Sohot Sowhat 94 92 106 -14 1.0 -
9 Lucrative 101 98 108 -10 0.0 -
10 Bevies Delight 101 101 110 -9 0.0 -
11 Be Merry 110 104 106 -2 0.0 -
12 Magical View 96 88 104 -16 1.0 -
99 Summer Lily - 99 108 -9 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