We hear a lot about the value of experience or the commodity of youth.
But Pakistan has now played 16 Test matches in the two and a half years since Misbah-ul-Haq and Younis Khan retired.
That gives a huge sample size in determining who has stepped up to the plate and who has failed. So of the players still in active Test contention, here is how their numbers stack up, from best to worst. I have put in a requirement that a player has played at least 2 Tests, and scored at least 150 runs.
ACHIEVING ENOUGH TO BE RETAINED
1. Babar Azam, age 25. 16 Tests, 27 innings, 1111 runs, 3 hundreds and 8 fifties, AVERAGE 48.30
2. Mohammad Rizwan, age 27. 3 Tests, 4 innings, 177 runs, 1 fifty, AVERAGE 44.25
3. Asad Shafiq, age 34 next month. 16 Tests, 28 innings, 1034 runs, 2 hundreds and 7 fifties, AVERAGE 36.92
4. Haris Sohail, age 31, 12 Tests, 21 innings, 735 runs, 2 hundreds and 2 fifties, AVERAGE 36.75
5. Shadab Khan, age 21, 5 Tests, 9 innings, 240 runs, 3 fifties, AVERAGE 34.28
6. Shan Masood, age 30, 8 Tests, 15 innings, 487 runs, 4 fifties, AVERAGE 32.46
BATSMEN WHO HAVE FAILED
7. Azhar Ali, 35 years old in 8 weeks, 16 Tests, 30 innings, 799 runs, 1 hundred and 6 fifties, AVERAGE 26.63
8. Imam-ul-Haq, 24 years old, 11 Tests, 21 innings, 485 runs, 3 fifties, AVERAGE 25.52
The figures don't lie.
16 Tests over 30 months is an incredibly long rope to give a player to hang himself with, and both Azhar Ali and Imam-ul-Haq are now well past the Jeet Raval "Every Other Team In The World Would Have Sacked You By Now" stage.
For the record, Raval is viewed as Unselectable after 7 bad Tests. Azhar Ali has had a horror run for the last 16 Tests and Imam-ul-Haq has for his last 11 Tests.
The other notable features of this analysis?
1. The two highest performing batsmen are aged 25 and 27.
2. None of the four batsmen aged over 30 even average a paltry 37 in the last two and a half years. You would think that - like Younis Khan and Misbah himself - you would have to be averaging over 40 in your thirties or forties to keep your place in the team. But now it seems that even low achievers averaging less than 40 can keep their place at that advanced age.
3. The only batsman aged over 30 who has improved his career average is Shan Masood, but he is on fairly unsafe ground averaging 32.46.
4. Asad Shafiq remains infuriating, but has barely declined at all from his career average of 38.82 to 36.92 in this period.
Yes, one of Azhar Ali and Asad Shafiq should be made to retire immediately. But it's not Asad Shafiq - it's Azhar Ali.
I don't have a problem with Abid Ali or Fawad Alam being selected for Pakistan. But not in addition to failing oldies - instead of them.
But Pakistan has now played 16 Test matches in the two and a half years since Misbah-ul-Haq and Younis Khan retired.
That gives a huge sample size in determining who has stepped up to the plate and who has failed. So of the players still in active Test contention, here is how their numbers stack up, from best to worst. I have put in a requirement that a player has played at least 2 Tests, and scored at least 150 runs.
ACHIEVING ENOUGH TO BE RETAINED
1. Babar Azam, age 25. 16 Tests, 27 innings, 1111 runs, 3 hundreds and 8 fifties, AVERAGE 48.30
2. Mohammad Rizwan, age 27. 3 Tests, 4 innings, 177 runs, 1 fifty, AVERAGE 44.25
3. Asad Shafiq, age 34 next month. 16 Tests, 28 innings, 1034 runs, 2 hundreds and 7 fifties, AVERAGE 36.92
4. Haris Sohail, age 31, 12 Tests, 21 innings, 735 runs, 2 hundreds and 2 fifties, AVERAGE 36.75
5. Shadab Khan, age 21, 5 Tests, 9 innings, 240 runs, 3 fifties, AVERAGE 34.28
6. Shan Masood, age 30, 8 Tests, 15 innings, 487 runs, 4 fifties, AVERAGE 32.46
BATSMEN WHO HAVE FAILED
7. Azhar Ali, 35 years old in 8 weeks, 16 Tests, 30 innings, 799 runs, 1 hundred and 6 fifties, AVERAGE 26.63
8. Imam-ul-Haq, 24 years old, 11 Tests, 21 innings, 485 runs, 3 fifties, AVERAGE 25.52
The figures don't lie.
16 Tests over 30 months is an incredibly long rope to give a player to hang himself with, and both Azhar Ali and Imam-ul-Haq are now well past the Jeet Raval "Every Other Team In The World Would Have Sacked You By Now" stage.
For the record, Raval is viewed as Unselectable after 7 bad Tests. Azhar Ali has had a horror run for the last 16 Tests and Imam-ul-Haq has for his last 11 Tests.
The other notable features of this analysis?
1. The two highest performing batsmen are aged 25 and 27.
2. None of the four batsmen aged over 30 even average a paltry 37 in the last two and a half years. You would think that - like Younis Khan and Misbah himself - you would have to be averaging over 40 in your thirties or forties to keep your place in the team. But now it seems that even low achievers averaging less than 40 can keep their place at that advanced age.
3. The only batsman aged over 30 who has improved his career average is Shan Masood, but he is on fairly unsafe ground averaging 32.46.
4. Asad Shafiq remains infuriating, but has barely declined at all from his career average of 38.82 to 36.92 in this period.
Yes, one of Azhar Ali and Asad Shafiq should be made to retire immediately. But it's not Asad Shafiq - it's Azhar Ali.
I don't have a problem with Abid Ali or Fawad Alam being selected for Pakistan. But not in addition to failing oldies - instead of them.