There are bowlers who have better statistical record than 311 Test wickets in 92 games and the 282 scalps in the 200 ODIs but what numbers alone would not be able to reveal is his ability to be a genuine match-winner in all conditions. The first phase was the start of his international career in Nairobi during the Mini World Cup in 2000 when he burst into the scene as a tearaway quick bowler unleashed by Sourav Ganguly.
What the stats don't tell is the number of matches he missed due to injuries in the last four years during which his international as well as IPL appearances were far and few in between. The story of 37-year old Zaheer, who called time on his international career today, was how one acquires envious skill set with hard work and devotion.
When it comes to left-arm seam or quick bowlers, who have played the game over time, Wasim Akram probably sits on a different pedestal but Zaheer certainly was India's 'Very Own Akram', may be a notch below but very effective nevertheless.
Reverse swing came into Indian cricketing conscience with Manoj Prabhakar but someone who took it to another level was Zaheer or 'Zak the Ripper' as fans would affectionately call him. Zaheer made Indian bowlers believe that reverse swing is not the preserve of Pakistani bowlers.
If one tries to dissect the career of the man from Shrirampore in Maharashtra, then it would be divided into three distinct segments.
The second phase was of a man, who knew exactly what he could do with red cherry. He shortened his run-up, lessened that pronounced jump while loading up and became an expert with old ball in sub-continental conditions.
This was the phase when Trent Bridge happened as India won a Test series in England, Test series against Australia at home where he was lethal with the old ball and the biggest of them all - World Cup where he led the charge with 21 wickets.
The third phase was a disappointing one which started with pulling out with a hamstring injury on the first session of the first day of a Test match against England at Lord's.
Zaheer had a surgery and was never the same bowler again despite still managing to trouble his 'bunny' Graeme Smith, whose "number was always" available with the classy left-armer. By the time he played his last Test match in Wellington during February 2014, one could see that he was bowling from memory.
It was his last five-for in Test as well as international cricket but Zaheer's ardent fans would not like to remember that 5/170 despite his incisive first spell. Talking about the first phase, Zaheer came just when Javagal Srinath, one of India's genuinely quick bowlers was entering the business end of his career.
Left-arm seamers are a rarity and here was someone clocking regularly in the region of 140 kmph to 145 kmph. One of the memorable dismissals in that early phase was a lethal yorker bowled by Zaheer to get rid of Steve Waugh in his very second ODI.
It is now well-documented as to how he was a vital cog in Sourav Ganguly's scheme of things during that phase along with Virender Sehwag, Yuvraj Singh, Harbhajan Singh and Ashish Nehra.
The quartet played a massive role in India turning out into a quality unit under Ganguly's leadership as they won the Natwest Trophy, drew the Test series in England and Australia, won in Pakistan and reached the World Cup final.
However, the two-year phase under Greg Chappell was a nightmarish one for Zaheer, just like his then skipper and some of the senior players. Zaheer, on his own admission, was circumspect during that phase as Chappell had told him that he might be dropped from the side. His fitness dipped, performance waned and was dropped from the Indian side after the tour of Pakistan in 2006.
He went to county cricket and that was the start of the second phase at Worcestershire, that led to a transformation from a tearaway quick bowler to a cerebral exponent of left-arm quick bowling. It includes a lot of variations that don't readily happen for ordinary seam bowlers: getting the ball to shape in into a right hander, to make the ball move away and get it to reverse when the ball gets old. Zaheer had it all and could do it without much effort.
A good season at Worcestershire enabled a comeback for the tour of South Africa at the end of 2006 but his finest hour came in 2007's English Summer. He made full use of his knowledge of conditions picking 18 wickets in three Test matches with a haul of 9/134 in India's series winning victory.
The match was also infamously known as the 'Jelly Bean Test' as England players were accused of spitting sweet candies near the pitch when Zaheer was batting. The image of Zaheer angrily pointing his bat at Kevin Pietersen standing at the gully is etched in the memory of one and all.
In the second innings of that Test match, Zaheer got 5/75 where he used conventional swing in his first spell and got the old Duke ball to reverse in his third spell as Rahul Dravid's men won a Test series in England after 21 years.
Zaheer never needed to sledge, he could bowl a heavy duty delivery, stare at the batsman and with a wry smile might have quiet word. Ricky Ponting got that that dose when he was run-out and Zaheer said: "Usain Bolt" making a sarcastic jibe at Australian skipper's speed while running between the wickets. That was the combative Zaheer.
This was the phase, he became a sort of a mentor and tutor for the young bowlers of that era: RP Singh, S
Sreesanth, Praveen Kumar, Munaf Patel - who had all learnt a thing or two and effectively implemented them for a short period of time. But they were no Zaheer Khan and that's why didn't last that long.
The manner in which Mahendra Singh Dhoni handled him during the 2011 World Cup was admirable. He was never as consistent in his entire career as he was during that tournament taking 21 wickets. If India managed a tie against England, it was because how Zaheer used the old white kookaburra under the Chinnaswamy lights.
The triumph of 2011 could have been an ideal swansong for the 33-year-old, who had nothing more to prove. Probably, Zaheer's only mistake was to carry on after the 2011 World Cup as he played only 14 Tests, 9 ODIs and five T20 Internationals after April 2, 2011.
If Zaheer, at the Wankhede with ICC World Cup was the most endearing of sights, the most tragic sight was a hobbling Zaheer at the Lord's later that year during that 0-4 Whitewash.
Contextually, Zaheer's career was over that very day at Lord's as he never was the same bowler in his last 13 Test matches. He deserved to get his 300 wickets and he got that but would always look like someone who was pushing his body's limits. He might play another year of IPL, but his die-hard fans would like to remember the Zaheer in whites trying all sort of weird artistry with the red cherry.
There are bowlers who have better statistical record than 311 Test wickets in 92 games and the 282 scalps in the 200 ODIs but what numbers alone would not be able to reveal is his ability to be a genuine match-winner in all conditions.
The first phase was the start of his international career in Nairobi during the Mini World Cup in 2000 when he burst into the scene as a tearaway quick bowler unleashed by Sourav Ganguly.