Impact Index

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  • Bang on for the Money

    How much value have newly-bought IPL Players brought?

    By Jaideep Varma and Jatin Thakkar



    We look at the 28 players who were traded publicly in IPL 2012 and determine their value to their teams in terms what was spent on them and what kind of an impact they had.

    It would have been great to do this across all players playing in IPL 2012 but it is not possible to do that given that their latest money values are not public. The story from just this is rather interesting too.



    It is interesting that Delhi Daredevils have the highest impact value player this year (Bracewell) and also the lowest (Jayawardene). The latter is a high impact player and a costly buy whereas Bracewell was a very smart buy – however, so far, DD has not given enough space to Bracewell to strut his stuff.

    Rajasthan Royals has spent wisely this year – Cooper, Hogg and Hodge their best buys. As per career T20 impact numbers, Dinesh Chandimal has been an outstanding buy – but unfortunately, he has not played much yet in IPL 5 – perhaps something they will rectify later. Read More »from Bang on for the Money
  • IPL: Highest Impact Teams

    Halfway Through IPL 5 - an Impact Index recap


    By Jaideep Varma and Jatin Thakkar


    This is the projection we had made through Impact Index for all 9 IPL teams before the tournament began. With the quintessential contempt and derision that can be experienced best in the comments section of most prominent Indian websites, we were laughed out of the ballpark with our knowledge, sanity and parentage questioned without inhibition.

    Many of those people comprehensively made the same mistake many "experts" in the mainstream media kept making too - that of mistaking good performances in ODI cricket as proof that of great potential in T20 cricket too. The truth is that there are many more players whose performances in the two formats do not have the same impact than those whose do - Brett Lee and Virat Kohli are good examples - both are outstanding ODI players but mediocre T20 players (capable of an outstanding performance in T20s too once in a while - and Lee has two series-defining performances to his credit too - but nowhere near as Read More »from IPL: Highest Impact Teams
  • Batting in T20 cricket – a perspective

    By Jaideep Varma and Jatin Thakkar

    T20 cricket involves the most diverse record-keeping in the game, given that prominent domestic tournaments have as much (arguably sometimes, even more) importance as international T20 matches.

    Here, to look at the best batting done across the world in this format, we have had to divide it into two broad categories – T20 Internationals and T20 Domestics. In each category, we provide the 3 highest impact batting performances both in a tournament and stand-alone-match context.

    T20 INTERNATIONALS

    The following are the five highest impact batsmen in T20 Internationals.



    Kevin Pietersen
    The Viv Richards of T20 cricket, as it were. Has had a huge impact on every parameter – the best T20 batsman on this list when it comes to scoring rapidly, delivering under pressure and chasing. Also has the lowest failure amongst all batsmen in T20I cricket.

    JH Kallis
    Not an all-rounder on numbers in T20 cricket, much more of a batsman – but what a batsman. The highest RunsRead More »from Batting in T20 cricket – a perspective
  • The Highest Impact IPL Players from 4 IPL seasons

    There is only one Indian on the list of 5 highest impact players in IPL history.

    Ambati Rayudu, is perhaps the biggest surprise on this list.


    By Jaideep Varma and Jatin Thakkar


    In the four IPL seasons before this one, in the 300-odd matches before 2012 dawned, there were plenty of high impact performances that made the careers of many players, even for events outside of the IPL (including those involving national duty).

    Here are the ten highest impact players in the history of IPL before this season. It is interesting that there is only one Indian on the list of 5 highest impact players in IPL history. Amongst the next 5 highest impact players, there are four Indians. So, altogether, only half of the ten highest impact players are Indians. 



    1. Shane Watson (IPL IMPACT 3.71)
    One of the 3 genuine all-rounders (both Batting and Bowling IMPACT over 1) on this list, besides Yusuf Pathan and Chris Gayle. Has the lowest failure rate (the percentage of times he failed to cross an IMPACT of 1) in the history of the IPL – therefore, the most consistent payer in this particular universe. A tournament-defining player.
     
    2. Chris Gayle Read More »from The Highest Impact IPL Players from 4 IPL seasons
  • Economy Rates in IPL history

    Ravichandran Ashwin’s hallmark as a bowler in this format is the impact he makes by restricting runs.

    By Jaideep Varma and Jatin Thakkar


    Measuring the economy rate of a batsman relative to the average economy rates in every match he plays in is an idea pioneered at Impact Index. This number, between 0 and 5, taken across a career, provides the clearest picture of the impact a batsman had on account of his economy rate.

    So, the varying standards of its time (when the analysis is done across eras) or of the conditions (say, the tournament economy rate during IPL 2 at South Africa would be different from the tournament economy rate in other years due to the conditions) is taken care of in this system, and therefore provides the truest picture as far as economy rate comparisons go.

    Here are the bowlers with the highest Economy Rate IMPACT numbers over the last 4 years of IPL (minimum 15 matches).

    1. R Ashwin (Economy IMPACT 0.99, 29 matches)
    2. M Muralitharan (0.91, 45)
    3. SL Malinga (0.69, 42)
    4. DL Vettori (0.67, 25)
    5. DW Steyn (0.64, 40)


    Ravichandran Ashwin’s hallmark as a bowler in this

    Read More »from Economy Rates in IPL history
  • The IPL's finest bowling performances

    The usual suspects — Ashwin, Malinga, Steyn, Muralitharan — and one surprise entry.

    By Jaideep Varma and Jatin Thakkar

    The following is a look at the finest bowling feats in the four completed years of IPL so far.


    Ravichandran Ashwin – the highest Economy IMPACT bowler in IPL and the one with the lowest bowling failure rates (i.e. the most consistent). Tournament-defining big match player for CSK.

    Doug Bollinger - highest impact IPL bowler in taking quick successive wickets and building pressure. Amongst the highest impact bowlers in taking top-order wickets and economy too. Big match player for CSK.

    Amit Mishra – high impact bowler when it comes to taking wickets, breaking partnerships and building pressure. Low failure rate, so amongst the most consistent too.

    Lasith Malinga – highest impact bowler in IPL history when it comes to taking lower-order wickets. Amongst the highest when it comes to top and middle-order wickets too. 3rd highest Economy IMPACT in IPL history. Very consistent.

    Muttiah Muralitharan – his strength in T20 cricket has been economy, as he is no.

    Read More »from The IPL's finest bowling performances
  • Batting under pressure in the IPL

    By examining the fall of wickets column in the scorecard, taken within the context of the match, it is possible to measure how much pressure a batsman absorbs in a match.


    By Jaideep Varma and Jatin Thakkar

    Impact Index is the only statistical system in cricket that measures the pressure absorbed by a batsman in the middle. This is only based on the circumstances precipitated by the fall of wickets – and no other factor. So, by examining the fall of wickets column in the scorecard, taken within the context of the match, it is possible to measure how much pressure a batsman absorbs in a match, and right through his career.

    Below, we present the batsmen who did that the best during the four years of IPL so far.

    The five batsmen who absorbed the maximum pressure in IPL history (minimum 15 matches) are:
    1. AD Mathews (Pressure IMPACT 0.22, 15 matches)
    2. SR Tendulkar (0.17, 51)
    3. SK Raina (0.15, 62)
    4. S Badrinath (0.15, 62)
    5. SR Watson (0.15, 32)

    Angelo Mathews’ presence here is not a surprise – batting under pressure is a speciality for him.

    Sachin Tendulkar’s presence may well be a surprise – given how obviously absorbing pressure has not been his strong

    Read More »from Batting under pressure in the IPL
  • Batting strike-rates in IPL history

    By Jaideep Varma and Jatin Thakkar

    As expected, Chris Gayle tops the list


    Measuring the strike rate of a batsman relative to the average strike rates in every match he plays in is an idea pioneered at Impact Index. This number, between 0 and 5, taken across a career, provides the clearest picture of the impact a batsman had on account of his strike rate.

    So, the varying standards of its time (when the analysis is done across eras) or of the conditions (say, the tournament strike rate during IPL 2 at South Africa would be different from the tournament strike rate in other years due to the conditions) is taken care of in this system, and therefore provides the truest picture as far as strike rate comparisons go.

    Here are the batsmen with the highest Strike Rate IMPACT numbers over the last 4 years of IPL (minimum 15 matches).

    1. CH Gayle (Strike Rate IMPACT 0.53, 28 matches)
    2. V Sehwag (0.35, 50)
    3. SR Watson (0.28, 32)
    4. YK Pathan (0.25, 58)
    5. JD Ryder (0.21, 18)

    No surprises here at all perhaps. Though Kieron Pollard would

    Read More »from Batting strike-rates in IPL history
  • Batting in the IPL – a perspective through Impact Index

    A look at the finest batting feats in the four completed years of IPL so far.

    By Jaideep Varma and Jatin Thakkar

    The following is a look at the finest batting feats in the four completed years of IPL so far.

    Shaun Marsh – the highest impact batsman in IPL has the highest Runs Rally and Partnership Building IMPACT. Has the second-lowest batting failure rate in IPL history.

    Chris Gayle – the highest Strike Rate and Chasing IMPACT in IPL.

    Sachin Tendulkar – in the top 5 in all IMPACT parameters for batsmen in the IPL. And very interestingly, amongst the 10 lowest Strike Rate impact numbers amongst 105 players who have batted in 15 or more IPL matches. That clearly suggests a sheet-anchor role that he has given himself in this format.

    Shane Watson – lowest failure rate amongst all batsmen in IPL (remarkable for an all-rounder). In the top 7 on all batting parameters. On top of that, a big match player (tournament-defining in 2008), and IPL’s highest impact all-rounder and player.

    Suresh Raina – big match player with two tournament-defining performances (in 2010Read More »from Batting in the IPL – a perspective through Impact Index
  • England win on points

    England in Sri Lanka - Test Series Review

    By Jaideep Varma and Jatin Thakkar

    Kevin Pietersen and Alastair Cook helped ensure England kept their No 1 ranking


    While bemoaning the futility of a 2-Test series yet again, if there is virtue in separating drawing teams in a Test series (and there may well be in these T20 times), England would go ahead of Sri Lanka in this series (by a good 11%, according to Impact Index).

    As England retained their no. 1 Test ranking, they also displayed champion-like qualities like coming back from behind with great conviction and keeping the foot ruthlessly on the throat, after getting into that situation.

    Here is an overview of the series through the Impact Index lens.



    Observations:

    The most significant thing to remember while looking at the IMPACT lists is that England came back from being 0-1 behind – which made their high-performing players eligible for series-defining points. It is for that reason that the two highest impact players of the series were from England.

    Graeme Swann got 16 wickets at an average of 22 while Rangana Herath got 19 wickets at 18 apiece in the series.Read More »from England win on points

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