Official NHA Assessment

Race 7: TAB 4RACING APP MR 80 HANDICAP (Open)

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Line Horse
Gold Rock
Reference for assessment
Exact Matches
0 / 11
Calculated = Official
Close Matches
3 / 11
Within 2 points
Significant Diffs
8 / 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    Mhlabeni             7    61.5    1    0.00     0.0   83    80           83    +0
2    Daleel               3    54.0    2    2.00     7.0   68    54           58    -10
3    Gold Rock            5    56.5    3    2.25     0.0   73    73           73    +0
4    Royal Shindig        4    56.0    4    2.30     4.0   72    63           63    -9
5    Zig Zag              5    57.5    5    3.05     0.0   75    74           74    -1
6    Motor City Hitman    3    59.5    6    4.55     7.0   79    62           69    -10
7    Duke Of Orange       3    57.0    7    5.80     7.0   74    57           64    -10
8    Ushuaia              4    58.0    8    8.05     4.0   76    65           66    -10
9    Gavel Strike         4    57.5    9    9.55     4.0   75    64           65    -10
10   Homer Fidget         4    56.0    10   11.30    4.0   72    61           62    -10
11   El Romiachi          8    54.0    11   15.05    0.0   71    65           65    -6
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Mhlabeni 83 90 83 +7 0.0 -
2 Daleel 68 66 58 +8 7.0 -
3 Gold Rock Line 73 72 73 -1 0.0
4 Royal Shindig 72 62 63 -1 4.0 -
5 Zig Zag 75 87 74 +13 0.0 -
6 Motor City Hitman 79 68 69 -1 7.0 -
7 Duke Of Orange 74 53 64 -11 7.0 -
8 Ushuaia 76 72 66 +6 4.0 -
9 Gavel Strike 75 71 65 +6 4.0 -
10 Homer Fidget 72 55 62 -7 4.0 -
11 El Romiachi 71 77 65 +12 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