Jansen's Double No. 1 and Abhishek's Return: A Data Audit of the ICC Rankings Update

Marco Jansen currently sits on top of two lists — No. 1 Test bowler and No. 1 Test allrounder. Ten wickets across two Tests, a best of 5/33, and 85 runs batting at No. 8. On paper it is a brilliant fortnight, and the rankings have rewarded it directly. But the most important number in this update is not the wicket count. That 85 from No. 8 carries almost as much weight in the allrounder table as the ten wickets — because the allrounder ranking is a composite of batting and bowling ratings, and a low-order batter's single large score pulls his batting rating up to a level that top-order players reach over hundreds of innings.

In the same update, Abhishek Sharma has returned to No. 1 among T20I batters — 113 off 38 balls, a strike rate of 297.4. Thirty-eight balls on one side, two Tests on the other. Two different sports are speaking inside one rankings release, and the rush to fold both into one headline is exactly where the arithmetic stops being read.

Context: what the ranking actually measures

An ICC player ranking first decides what it is measuring. It is not an average, and it is not a series award. Every innings in every match generates a rating point, that point is weighted by the strength of the opposition, and the result is aggregated over a rolling window — long in Tests, much shorter in T20Is. The implication is plain: a ranking is a lagging indicator, not a report card. It describes who did how much over the recent past; it does not say who wins next.

The second layer is the allrounder table. It is not a separate competition; it is a combination of batting and bowling ratings. A player who is competent in both can therefore move ahead of a player who is elite in one and ordinary in the other. In Jansen's case both departments arrived together — ten wickets and 85 runs. The combination is rare, which is why the double top spot is a genuine achievement. The question is not whether he is No. 1. The question is how quickly that No. 1 can move.

The series context matters just as much: the South Africa–Australia Test series, the India–New Zealand T20I series, and the ODI tri-series running in Pakistan and the UAE. Three stages, three formats, all on one rankings page. That is where the reader's real risk sits — conflating Test, ODI and T20I numbers.

One disclosure before the analysis. The date and the ranking period of this update are not recorded in the source. The scorecard figures I am citing — ten wickets, 5/33, 85 runs, 113 off 38, Bavuma's 179 — come from match reports and should be independently reconciled against the scorecards. I do not have access to the ICC's underlying ratings table, so I am not disputing the calculation. I am disputing the interpretation.

Core: two No. 1s, two different stories

Jansen's double top spot is built from three things. First, volume: ten wickets in two Tests is five per Test, top-tier in the format. Second, the best return of 5/33, which tells you the wickets came in a pressure spell rather than a long tail-clearing one. Third, the 85 at No. 8 — the least discussed and most consequential of the three.

A No. 8's eighty-five in a Test is not worth less than ten wickets with the ball, because it does two jobs at once: it lengthens the tail and it preserves freshness in the attack. A fast bowler who can make 85 down the order buys his team a spare specialist. That is precisely why franchise scouting has repriced this profile faster than any other — players who cover two departments inside one match, not across two formats.

In the matches I have watched over the years, the pattern repeats. Whenever a Test side fields three quicks plus one allrounder, the fourth session goes quiet. When the fourth seamer is also the allrounder, the last two hours do not lose pace. Jansen currently belongs to that category, and the ranking has classified him as such. It is not a certificate of individual greatness; it is a valuation of the role Test cricket currently demands most.

Abhishek Sharma's story runs on entirely different logic. 113 off 38. Across the India–New Zealand T20I series his three innings read 29, 27 and 113 — a series aggregate of 169. Here is something I have believed for a long time: in T20I cricket the hundred is a coverage artifact, not a unit of value. A 38-ball hundred and a 60-ball hundred cannot be read the same way. A strike rate of 297.4 is roughly three runs per ball, and that is the rate that drives a top ranking, because the T20I window is short and recency is weighted heavily.

But there is a structural detail the headline skipped. Ishan Kishan's injury is the reason the door opened. It is the freshest illustration of what I consider India's real problem: not a shortage of talent, but the speed of selection. When an opener breaks down and his replacement goes straight to No. 1, that does not prove the bench is deep. It proves opportunity arrives through a single door, and the door only opens when someone is hurt.

The headline also says he took the crown back. The word back assumes the crown was his. The source confirms only that Ishan overtook him in July. The prior history the headline implies is cleaner in prose than it is in the data.

The rest of the movement deserves the same reading. Temba Bavuma's 179 is a significant transfer in the Test batting table, because Bavuma's value has never been in volume of runs but in surviving difficult conditions. Harry Brook's rise is a signal from a younger generation climbing quickly. Scott Boland's surge raises a different question in the bowling table — how a low-volume, high-lethality bowler outranks someone playing a long series. Simon Harmer's name moving up the Test spin list says spin has not been devalued outside the subcontinent. Shaheen Shah Afridi and Azmatullah Omarzai moving up are two different stories for Pakistan: a fast-bowling recovery, and a new asset in the allrounder bracket.

And the names sitting in the surrounding context — Mitchell Starc, Matt Henry, Ollie Robinson, Jasprit Bumrah, Ravindra Jadeja — tell you the top ten is unusually crowded. When the top five bowlers come from five countries and the order changes weekly, treating a ranking as a permanent status is the error.

Contrarian: a ranking is not a cause

Let me state the strongest version of the opposing case first. The ranking's stated purpose is to measure consistency, and the rolling-window arithmetic serves that purpose well. One innings does not move a ranking, nor do four; a rating is the sum of many matches. In that sense the ranking is an outcome of performance, not a source of it.

That is exactly the root of the error nearly every rankings report repeats: performance → ranking movement → headline. The sequence gets read backwards, as if the ranking produced the player. Jansen is No. 1 because he took ten wickets; he did not take ten wickets because he was No. 1. The distance between correlation and cause looks small here, and it is the single largest mistake in rankings analysis.

The second problem is structural. Because the allrounder table is a composite, it rewards the player with contributions in both departments — but the addition does not tell you which contribution mattered. One 85 at No. 8 and thirty wickets are weighed on the same scale. That is a limitation of the instrument, not a flaw in the player.

The third problem is the timestamp. This is being read while the third Test is live, and the source itself concedes the top bowling spots could shift quickly. Building a story that treats this update as a fixed photograph is the one mistake with no cure.

Takeaway: watch the selection, not the table

The next signal will come from selection, not headlines. Jansen's double top spot validates a South African selection philosophy that hunts for a fourth seamer disguised as an allrounder — the question is whether that model holds through the rest of the series. For India, the real question is whether Abhishek's return to No. 1 is a verdict or an injury vacancy. Until that is answered, the ranking will keep telling us who is on top. It will not tell us who plays.