Naavi Rating Scheme for Cricketers
.

This rating has been developed to follow the performance of cricketers in the Limited over matches. An attempt has been made here to give suitable weightages to different aspects of the game to provide a cross platform comparison.

The scheme is being test run during the World cup to identify the "Man of the World Cup-99". Suggestions and assistance in monitoring the performance of players are welcome.

All players will start with a zero base and accumulate points based on their performances.
 

The rating will be computed in the following steps.

Step 1.Calculation of Basic Points:

Points will be awarded based on the runs scored, wickets taken, catches/stumpings/runouts effected.(See points table below).

Step 2.Calculation of Bonus points and adding to Basic Points:

Points will be added to the basic points based on the rate of runs scored(batsmen) and rate of runs given(Bowlers).(See points table below).

Step 3.Determine the Weightage factor:

The total points gained in step 2 will be converted into ratings based on a weightage factor.

The principal of this weightage would be to factor-in the "Difficulty" based on the strength of opposition. The weightage chart given here under is based on a subjective evaluation of strengths of different schemes. This can be converted( Under process) in to a more scientific method by calculating the "Batting Strength" and "Bowling Strength" of each team based on Kumble rating scheme or Price Waterhouse-Cooper rating scheme which has been monitoring the players for some time.

The weightage will be used as a multiplier if the points after step 2 is positive and as a divider if the points at step 2 is negative.


 

Step 4. Calculate the Rating for the match and add to the previous rating:
Rating=
 
(Basic Points + or – Bonus Points)X or / Weightage
factor)
Rating will be calculated for each match and incremented from a zero base.

Basic Points chart: 1 point for every run scored

20 points for every wicket taken

10 points for every catch, stumping,and direct hit runout. (This can be claimed even by the substitute players)

10 points for the direct run out will be shared if more than one person participates in the run out process.

Bonus Points Chart:

a: Batting Bonus:

Bonus= Individual Run rate per ball ~ Team run Rate per ball X Number of balls faced. (Difference of the rates whether positive or negative multiplied by the number of balls faced will constitute the bonus)

E.g.: If the team has scored 300 runs in 50 overs i.e. 300 balls, the team rate would be 1 per
ball. If Dravid has scored 80 runs in hundred balls he will have a negative 20 as bonus [(0.8-1.0)X100]. His total points at this stage would be 60 instead of 80. If Jadeja has scored 30 of 20 balls his individual rate would be 1.5 per ball as against the team's rate of 1 per ball and his bonus would be 10[(1.5-1.0)X20]. His total points would be 40 inclusive of the bonus. This provides a level playing field for batsmen who would be coming late in the order.

P.S. team Score will be inclusive of extras.
 
 
 

B: Bowling bonus:

 

  • Bonus= (Team Run given rate per over~Individual run given rate per over)X Number of overs bowled by the bowler (Bonus will be positive if the bowler has given less runs than the team and negative if he has given more runs than the team. It will also get multiplied by the number of overs bowled)

    • E.g.; If Prasad has bowled 10 overs and given 30 runs, his rate would be 3.0 per over. If the team has given 5.0 runs per over, Prasad will get a positive bonus of 20 points (equivalent to getting a wicket). If Robin Singh has given 30 runs in 5 overs in the same match he will get a negative bonus of 5 points [ (6.0-5.0)X5].

    P.S.: Team Score will be inclusive of extras. Bowler runs given will include wides and or No balls as per the rules adopted in the ODI official rules.

    3.Weightage Chart:

  • Points at step 2 if positive will be multiplied by the weightage factor to arrive at the rating.
  • Points at step 2 if negative will be divided by the weightage factor to arrive at the rating.
     

    • The weightage table is as follows:
    Playing
    Vs
    Team
    Batting Point Weightage
    (Reflects Bowling Strength of opposition)
    Bowling Point Weightage
    (Reflects Batting Strength of opposition)
    South Africa
    1.2
    1.2
    Australia
    1.2
    1.1
    Pakistan
    1.2
    0.9
    India
    1.0
    1.0
    West Indies
    1.2
    0.8
    England
    0.9
    0.8
    New Zealand
    0.8
    0.8
    Sri Lanka
    0.8
    0.9
    Zimbabwe
    0.7
    0.6
    Kenya
    0.6
    0.5
    Bangladesh
    0.5
    0.4
    Scotland
    0.5
    0.4

    * There will be no weightage for fielding points.

    (The weightage table has been revised based on the performances of players in the build up to the world cup)
     

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