How do you rank the best captain in an individual Test?

The Captaincy Performance Index takes into account the team’s performances and the captain’s individual contribution to the team

Anantha Narayanan11-Mar-2023A couple of weeks ago, an article of mine, on Test captains, was published in the . While that feature covered this fascinating subject in an anecdotal manner, this article will look at the subject from an analytical point of view, using the measure I created to evaluate the performance of Test captains at individual Test level, called Captain Performance Index (CPI).A Test captain’s role in cricket, unlike those of captains in, say, football, Davis Cup tennis, and basketball and baseball, comes with real responsibility. A cricket captain – setting aside the matter of how much advice he receives from the coach – bears responsibility in a number of areas. He selects the team, more or less; determines the sequence of bowlers used; decides the batting order; sets fields; decides whether the team plays safe or aggressively; and a lot more.Inarguably, the Test captain has the most responsible and difficult task among captains in all sports.So how does one measure a captain’s performance? Results, of course, are important here, starting with the captain’s own batting, bowling and fielding performances. Factors such as the venue of the match, the relative strengths of the two teams, how much experience the captain’s team has, and who won the toss, come into play as well.We can look at the numbers relating to these factors in different ways to arrive at an assessment of how the captain performed. But there is one more factor to understand. If a team wins by a margin of, say, under ten runs, we could say that the captain marshalled his troops at key moments. How do we measure a captain’s impact in one- or two-wickets wins? It is the batters at the crease who have to perform. The captain, in the pavilion, can do nothing but chew on his fingernails. But he has to get some credit for such close wins for decisions taken earlier.There are three major bones of contention.The first is that most of these close wins could be attributed to the team rather than the captain, barring personal performances. That’s true, but in my view the captain is like the CEO of a company. He takes important decisions on behalf of the team, he is one with his team, so it does not matter that some of these measures are identified strongly with the team. If the captain wins, the team wins and if the team loses, the captain loses. I am going to treat the captain and the team as roughly synonymous. (And my methodology ensures that “non-playing” captains do not have a great chance of getting high CPI values.)The second is that it is impossible to assign values to captaincy decisions that might have had a profound impact on the course of the match. Say, the captain places two short covers and gets a batter caught driving, or places two leg slips to a sharply turning offspinner and gets his man, or deliberately leaves the midwicket area open and gets the batter top-edging – we have to accept that these are part of the captain’s contribution but cannot really be measured.Finally, how do we really measure the overall game-changing strategic contributions, such as those England captain Ben Stokes has made recently? (The coach, Brendon McCullum, is like the policy-making chairman of the company – let us keep him out of our analysis.) It is impossible to recognise these strategies in an objective manner and we have to be satisfied that these methods have been rewarded by a sequence of ten wins and two losses in 12 matches.What is Captain Performance Index?CPI is calculated through a combination of what the captain achieved for the team, in terms of the result and the margin of result, and how he performed on the field in his individual capacity. These numbers are indexed by four factors: how the teams match up on their strength matrix, their experience quotient, the location of the match, and the result of the toss. The calculations are simple and are explained below. A CPI value of 90.0 is about the highest that can be achieved.1. Result points1a. Result: A win is allotted the maximum of 40 points, a tie gets 25 points, and a draw receives 20. A loss is allotted four points because after all, the losing captain too has played, and often fought hard. And he could well have lost a close match, and so deserves these nominal points.Recently, some readers have questioned some of these numbers. Why 40? Why not 50? Why toss?Most of these are relative numbers. These are fixed so that the CPI maxes out at, say, a nice round number like 100. And regarding the weights, these are the result of my analysis for over two decades and the inputs provided through thousands of reader responses. I am open to considering well-thought-out alternatives; say, a fifth multiplying factor, if you have one. Or another base-point factor.1b. Margin: The margin of victory, as perceived in the Team Performance Points measure, is allotted a maximum of ten points. The biggest win is England’s 675-run win over Australia in Brisbane in 1928-29, which is allotted 9.42 points. The teams that did not win receive their fair allocation. Thus, a captain who loses by a narrow margin receives significant recognition.2. Performance pointsThese are for a captain’s own performance on the field, based on the percentage of team contribution he made. Care is taken that the performances are substantial and a lightweight one, such as taking two out of three wickets to fall in an innings (where the target is reached or there is a declaration or the match ends), is not rewarded out of proportion. The captain’s individual performances carry around 15-25% weight.2a. Batting: Ten points.2b. Bowling/fielding: Ten points. (Fielding points account for wicketkeeper-captains).3. Index valuesIndex values are used to multiply the Base Points. The range of the parameter is an indicator of the weight it has and its importance.3a. Relative Team Strengths: 0.667 (very strong team) to 1.333 (very weak team). Maximum 2.97, and minimum 0.33. These are extrapolated to between 1.33 and 0.667.3b. Location of Test: 0.875 (Home), 1.00 (Neutral), 1.125 (Away).3c. Team Experience: 0.925 to 1.075. This is based on the sum of Tests played by the members of the teams – 600 to 0. Actual value of maximum Tests is 850 (India-2008); the 171 historical values (6%) above 600 are normalised to 600. I have deliberately used the absolute values of the teams rather than the relative values (like the team strength) since I strongly feel that a shortage of experience hits a team badly irrespective of who they play against. The captain of an inexperienced team has to be given credit for his team’s lack of caps.3d. Result of Toss: Winning – 0.975, Losing – 1.025.The product of all four multiplicative indices (MF1) is used to adjust the Result-related values. The product of the first two multiplicative indices (Location and Team Strength – MF2) is used to adjust the Performance values since the Performance does not depend on Team Experience or Toss.Captain Performance Index:
CPI = Result points * MF1 + Performance points * MF2.Anantha NarayananOverall, it can be seen that this is a rather simple, easy-to-understand measure.Let us now move to the tables.