Official NHA Assessment

Race 10: NEXT TURFFONTEIN RACEMEETING THURSDAY 9 NOVEMBER CLASSIFIED STAKES (For horses with nett rating of 75 and below)

Back to Race
Line Horse
Inventrix
Reference for assessment
Exact Matches
2 / 16
Calculated = Official
Close Matches
4 / 16
Within 2 points
Significant Diffs
9 / 16
More than 5 points
Detailed Assessment
------------------------------------------------------------------------------------------------------------------------
Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
------------------------------------------------------------------------------------------------------------------------
1    After Hours          7    58.0    1    0.00     0.0   68    82           74    +6
2    Inventrix            2    58.5    2    4.25     5.0   73    73           73    +0
3    Neerah               2    56.5    3    4.30     5.0   79    69           69    -10
4    Mandalay             3    50.5    4    4.35     7.5   52    52           52    +0
5    Circle Of Grace      4    56.0    5    4.50     9.0   77    60           67    -10
6    Jasiri               2    58.5    6    5.25     5.0   83    73           73    -10
7    Coming In Hot        3    60.0    7    5.75     7.5   72    71           71    -1
8    Gimme The Flame      5    49.0    8    5.80     0.0   56    64           64    +8
9    Written In Stone     9    52.0    9    6.25     0.0   56    70           70    +14
10   Anytime Champ        3    52.0    10   6.75     7.5   59    55           55    -4
11   Whirlybird           2    57.0    11   6.85     5.0   83    70           73    -10
12   Circus Lights        5    58.0    12   7.00     0.0   70    82           82    +12
13   Palace Revolt        2    60.0    13   7.50     5.0   85    76           76    -9
14   Zoombomber           2    56.0    14   8.00     5.0   77    68           68    -9
99   Try Me               4    56.5    99   0.00     9.0   -     61           61    +0
99   Risky Business       3    50.5    99   0.00     7.5   -     52           52    +0
------------------------------------------------------------------------------------------------------------------------

Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 After Hours 68 79 74 +5 0.0 -
2 Inventrix Line 73 73 73 ✓ Match 5.0
3 Neerah 79 77 69 +8 5.0 -
4 Mandalay 52 53 52 +1 7.5 -
5 Circle Of Grace 77 51 67 -16 9.0 -
6 Jasiri 83 82 73 +9 5.0 -
7 Coming In Hot 72 76 71 +5 7.5 -
8 Gimme The Flame 56 50 64 -14 0.0 -
9 Written In Stone 56 67 70 -3 0.0 -
10 Anytime Champ 59 53 55 -2 7.5 -
11 Whirlybird 83 73 73 ✓ Match 5.0 -
12 Circus Lights 70 64 82 -18 0.0 -
13 Palace Revolt 85 64 76 -12 5.0 -
14 Zoombomber 77 60 68 -8 5.0 -
99 Try Me - 52 61 -9 9.0 -
99 Risky Business - 75 52 +23 7.5 -
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