Fantasy points formula

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FTP-ashario
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Fantasy points formula

Post by FTP-ashario » Tue Jan 05, 2010 3:34 am

Version 110 saw the introduction of a new set of calculations for determining fantasy points earned. In summary, the two main changes to the calculations are:

- batting points are awarded relative to the total runs scored in a match. For example, scoring 50 in a low scoring match will earn you more points than scoring 50 in a high scoring match
- points awarded for wickets are based on the batting order of the player. For example, less points are awarded for dismissing the #11 batsmen compared to a batsman in the top 6.

There are also two sets of weightings used when calculating points. One set is used for senior and youth one day matches. Another set is used for Twenty20 matches.

Particular thanks are extended to MOD-R0b1et, who was the driving force behind the development and testing of the new calculations.

(this thread is a work in progress)

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Senior OD and Youth OD calculations

Post by FTP-ashario » Tue Jan 05, 2010 3:34 am

Points per player = batting points + bowling points + fielding points

Batting Points

Before batting points are awarded, two 'multipliers' need to be calculated, the runs ratio and the strike rate ration.

Runs scored ratio
To account for the different conditions the batsmen face, the effective total runs scored in the game must be considered for this calulation the total runs scored with availible resources is considered. This is used to scale the effect of runs scored by generating a "runs ratio".

If the second innings is incomplete (the first always will be), an estimate of the final score they would have achieved must be made, to do this the lower total of that assuming overs were the limiting factor or that assuming wickets were the limiting factor is taken:
Total if overs were the limiting factor = Score * (300/balls used)
Total if wickets were the limiting factor = Score * R (R defined from table below)

Code: Select all

Wickets lost: 0     1     2     3     4     5     6     7     8     9     10     
Ratio:        100   6.92  3.46  2.34  1.78  1.46  1.28  1.16  1.08  1.03  1
For the purposes of our calculations, we assume the average total runs scored in a match is 410.
example wrote: Team batting first gets 125ao (45overs).
The chasing team reaches the target to get 127/3 off 34 overs.

Total if overs limiting = 127 * (300/204) = 187
Total if wickets limiting = 127 * 2.34 = 297

So the second innings will be considered to score 187. Therefore the effective total score of the game is 187+125 = 312.
That makes the runs ratio 410/312 = 1.31.

In this game each run scored will earn 1.31 points.
For example, a batsman scoring 45 in the game will earn 45 * 1.31 = 59 points.
Strike rate ratio
The strike rate ratio is calculated using the actual totals and balls faced, simply 100*runs/balls.

For the purposes of our calculations, we assume that 75 runs per 100 balls is the average strikerate for batsmen.

The strike rate ratio = 75/actual strike rate for the match.
This ratio will be used to scale strike rates before assigning strike rate points.
example wrote: In our example game:
Strike rate ratio = 100*(125+127)/(270+204) = 53
strike rate ratio = 75/53 = 1.42

In this game, each batsman's actual strike rate will be multiplied by 1.42 before awarding strike rate points.
Strike rate bonus/penalty table
Strike rate bonuses are multiplative to the runs scored and calculated from adjusted strike rates.
Adjusted strike rates are calculated by the players strike rate * strike rate ratio.
For example, if a batsman scored 45 from 67 balls, he would have an adjusted strike rate of ( (45/67) * 1.42) = 95.4.

The percentage bonuses/penalties applied are as follows:

Code: Select all

Adjusted strike rate <10         10-34.99    35-59.99    60-84.99   85-109.99  110-159.99 >159.99   
% bonus             -40%             -20%        -10%           0        +10%        +20%    +40%
Milestone points
For scores >=100, 40 bonus points
For scores 50-99, 20 bonus points
For scores 25-49, 10 bonus points
Dismissed, -10 points
Dismissed for a duck, -10 points (so a duck scores -20)
For each six hit, 4 points.
example wrote: Graham Gordon scores 17 (off 47) in the our example match, with 1 six.
run points = 17 * 1.31 = 22.3 points
dismissed = -10 points
adjusted strikerate = 1.42 * (100*17/47) = 51
strikerate penalty = -10% for strike rate = -2.2 points
sixes = 1 * 4 = 4 points
TOTAL BATTING POINTS = 22.3 -10 -2.2 +4 = 14.1 points
Bowling Points

Points for each wicket
Each wicket scores points based on the batting order position of then batsman dissmissed with this table:

Code: Select all

Batting position:  1  2  3  4  5  6  7  8  9 10 11 
Points scored:    26 26 25 24 22 18 14 11  8  6  3
Milestone points
Bonus points are allocated for the number of wickets taken as follows:
2 wickets = 5 points
3 wickets = 10 points
4 wickets = 20 points
5+ wickets = 40 points

Economy points
Points are awarded for economy rate as follows assuming at least 3 complete overs are bowled by the bowler.

Code: Select all

Econ rate: <1.5rpo | 1.5 - 2.49 | 2.5 - 3.49 | 3.5 - 5.49 | 5.5 - 6.49 | 6.5 - 7.49 | > 7.49
Points:         40           20           10            0          -10          -20      -40

Finally, there is a 6 point bonus for each maiden over.
These are added together to gain the total bowling score.
example wrote: Graham Gordon achieves bowling figures of 3/37 from 10 overs, bowling 1 maiden (his wickets are the 2nd, 3rd and 7th batsmen).
Wicket points = 26+25+14 = 65
Milestone points = 10
Econ points = 0
Maiden pts = 1*6 = 6
TOTAL BOWLING POINTS = 65+10+0+6 = 81.
Fielding Points

Catch by keeper or fielder: 10 points
Stumping by keeper: 10 points
Runout by keeper or fielder: 10 points
example wrote: Graham Gordon took 2 catches. His fielding points are 2*10=20 points.

Graham Gordon's total points allocated for this match = 14.1 (batting) + 81 (bowling) + 20 (fielding) = 115.1.

FTP-ashario
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Twenty20 calculations

Post by FTP-ashario » Tue Jan 05, 2010 3:34 am

Points per player = batting points + bowling points + fielding points

Batting Points

Before batting points are awarded, two 'multipliers' need to be calculated, the runs ratio and the strike rate ration.

Runs scored ratio
To account for the different conditions the batsmen face, the effective total runs scored in the game must be considered for this calulation the total runs scored with availible resources is considered. This is used to scale the effect of runs scored by generating a "runs ratio".

If the second innings is incomplete (the first always will be), an estimate of the final score they would have achieved must be made, to do this the lower total of that assuming overs were the limiting factor or that assuming wickets were the limiting factor is taken:
Total if overs were the limiting factor = Score * (120/balls used)
Total if wickets were the limiting factor = Score * R (R defined from table below)

Code: Select all

Wickets lost: 0     1     2     3     4     5     6     7     8     9     10     
Ratio:        100   6.00  3.00  2.04  1.60  1.36  1.21  1.13  1.06  1.03  1
For the purposes of our calculations, we assume the average total runs scored in a match is 300.

Strike rate ratio
The strike rate ratio is calculated using the actual totals and balls faced, simply 100*runs/balls.

For the purposes of our calculations, we assume that 127 runs per 100 balls is the average strikerate for batsmen.

Strike rate bonus/penalty table
Strike rate bonuses are multiplative to the runs scored and calculated from adjusted strike rates.
Adjusted strike rates are calculated by the players strike rate * strike rate ratio.
For example, if a batsman scored 45 from 67 balls, he would have an adjusted strike rate of ( (45/67) * 1.42) = 95.4.

The percentage bonuses/penalties applied are as follows:

Code: Select all

Adjusted strike rate <40         40-64.99    65-89.99    90-104.99  115-139.99  140-164.99 >164.99   
% bonus             -30%             -20%        -10%            0        +10%        +20%    +30%
Milestone points
For scores >=100, 40 bonus points
For scores 50-99, 20 bonus points
For scores 25-49, 10 bonus points
Dismissed, -10 points
Dismissed for a duck, -10 points (so a duck scores -20)
For each six hit, 4 points.

Bowling Points

Points for each wicket
Each wicket scores points based on the batting order position of then batsman dissmissed with this table:

Code: Select all

Batting position:  1  2  3  4  5  6  7  8  9 10 11 
Points scored:    33 33 31 27 22 17 13 10  7  5  3
Milestone points
Bonus points are allocated for the number of wickets taken as follows:
2 wickets = 10 points
3 wickets = 20 points
4 wickets = 40 points
5+ wickets = 60 points

Economy points
Points are awarded for economy rate as follows assuming at least 3 complete overs are bowled by the bowler.

Code: Select all

Econ rate: <2.6rpo | 2.6 - 4.59 | 4.6 - 6.59 | 6.6 - 8.59 | 8.6 - 10.59 | 10.6 - 12.59 | > 12.59
Points:         40           20           10            0           -10            -20       -40

Finally, there is a 10 point bonus for each maiden over.
These are added together to gain the total bowling score.

Fielding Points

Catch by keeper or fielder: 10 points
Stumping by keeper: 10 points
Runout by keeper or fielder: 10 points

darkmatter
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Re: Fantasy points formula

Post by darkmatter » Wed Jan 06, 2010 10:28 pm

What about teams who reverse the order, or who play their best batsmen at 4,5 and 6.

Surely a better method would be to (using the calculation to work out a batsman summary) - rank them by ability.

So a batsman who rates accomplished(64/100) could be the top, followed by accomplished (22/100) then reliable (98/100)

the (*/100) is just a numerical representation of how close they might be to the next summary - which assuming the summary is worked out by number - then visualised by a word - is the way it is calculated.

I agree with the rest though.
Darkmatter - USA u19 assistant (seasons 5-7); u19 manager(seasons 8-9); Assistant manager (season 10 -14,17-some time); National Manager (season 14 - 16) Winner (s16 & s17 T20 1.1)(s46 SOD 1.1

ChodaBoy
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Re: Fantasy points formula

Post by ChodaBoy » Thu Jan 07, 2010 1:55 am

Mostly good barring:
Economy points
Points are awarded for economy rate as follows assuming at least 3 complete overs are bowled by the bowler.

Code: Select all
Econ rate: <2.6rpo | 2.6 - 4.59 | 4.6 - 6.59 | 6.6 - 8.59 | 8.6 - 10.59 | 10.6 - 12.59 | > 12.59
Points: 40 20 10 0 -10 -20 -40
This seems very strange. The intervals between amounts of points are far too large IMO.

2.7 rpo is stunning while 4.5 is decent, but both get the same points. Likewise, a decent 4.7 earns no more points than 6.4 which under most circumstances would be rubbish.

From there, the pitch type (and possibly bowler type thereon) surely has to be taken into account. I've had bowlers with spells at 6.3 rpo contribute to a win on a Flat, and some cost me a game with 5.1 rpo on a Sticky or Crumbler. It doesn't make sense to award the same economy rates the same points across all pitch types.

Bowler type may be complicating things too far, but might recognise the contributions that spinners sometimes make on a Green/Hard/Flat and ditto for seamers.
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darkmatter
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Re: Fantasy points formula

Post by darkmatter » Thu Jan 07, 2010 1:02 pm

I think looking at wages you could often work out the "best" batsmen anyway..

I still don't know why a pinch hitting AR or tailender should be rewarded more points than getting out a tough,stable 6 or 7...
Darkmatter - USA u19 assistant (seasons 5-7); u19 manager(seasons 8-9); Assistant manager (season 10 -14,17-some time); National Manager (season 14 - 16) Winner (s16 & s17 T20 1.1)(s46 SOD 1.1

FTP-ashario
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Re: Fantasy points formula

Post by FTP-ashario » Mon Jan 11, 2010 1:09 am

darkmatter wrote:I think looking at wages you could often work out the "best" batsmen anyway..
not if that batsman can bowl or keep

i'm dead against player skill levels and/or wages being some sort of multiplier used to award points. i think it raises more problems than it solves.

ChodaBoy
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Re: Fantasy points formula

Post by ChodaBoy » Mon Jan 11, 2010 8:35 am

I agree, it would further encourage the already rampant development of primary whores.
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