AWTA. Except I'd argue that Warne and MacGill were much more difficult to keep to than Kumble. Which goes on to prove my constant point of how underrated Gilchrist was as a pure keeper.
I disagree. The reason being, the hardest delivery to keep to a spinner- bar none- is the top spinner. The googly/wrong one/doosra is the second hardest to keep to. In both cases, its because the deliveries are very late to pick up. Particularly for the top spinner, it becomes evident only when the ball starts to dip. But with the top spinner, the ball bounces prodigiously high as well as shooting through. This requires the wicketkeeper to rise earlier than expected but to catch any edge, it has to be well timed too- you cant just get right up and catch the ball off the edge, you have to time it so you are not done rising till the batsman is going through with his stroke. (ie, start rising between pitching and finish rising when the batsman is hitting the ball). With fast bowlers, collecting at your collar level for a delivery comming to your body is much easier- the extra time allows you to turn your wrists over to do the 'palms facing skyward/up' manuever. This manuever is practically impossible to do against spinners so you gotto do the 'palms facing down but at neck level' move. This is the most technically challenging move to do day-in, day-out without missing.
Lateral deviations of spinners are far easier to keep to, because it is more of a reflex thing, moving your hands over one way or another. But the top spinner is by far something that will make any technically weak wicketkeeper look bloody incompetent. Particularly coz the top spinner- either left or off of an edge- often comes high, fast and directly at the keeper's body. Its easier to rise with the ball and move your hands sideways and up ( to a leggie, up and to your right) than it is to move it straight up, while rising. Timing the rise as well as collecting the ball at the height of the collar bone is the hardest thing to technically master, particularly when its off a well disguised delivery like the top spinner.
And Kumble bowled the deadliest top spinner I've seen in history.
The hardest bowler to keep to- this I actually have heard from two world renowned wicketkeepers and i can relate to, by keeping to spinners- was keeping to Kumble on the crumbling pitches of India. On these wickets, Kumble's top spinner dipped prodigiously late and spat with bounce and speed with such great change in speed and trajectory that it got called the 'spitting cobra'. The delivery that had every batsman and his dog in a quandry, where Kumble picking wickets as the wicket became drier, dustier and crumblier was just a matter of time.
Warne or McGill never really had the top spinner that bounced and gained speed like the crack of doom. Till 2001, when Kumble had the best top spinner seen in world cricket, it required the highest of skills to keep to him. Even after his finger surgery in 2001, where his top spinner lost a bit of fizz (and ironically it made Kumble a better leg spinner), it was a heck of a lot harder to read, keep to and time your reaction to as a keeper, than the prodigious spinners of Warne or McGill.
Don;t get me wrong, keeping to Warne and McGill were no walk in the park, it required extreme competence as reading the googlies are just as hard for a keeper as a batsman but keeping to Kumble was just on a different plane due to the googly as well as the top spinner.
I once spoke to Deryk Murray about keeping and he pretty much straight away put Mongia in the top echelons of keeping due to this factor.
FYI, i realized I was a glorified backstop and gave up my stint as keeper and reverted to a medium pace/off spin allrounder after i kept to a Pakistani bowler (his name escapes me at the moment ) who had a decent top spinner. The number of balls I missed was actually pretty damaging to my esteem as a keeper, something i worked on for a while due to my agility and athleticism, despite not struggling much to keep to spinners who spun the ball.
Keeping to fast bowlers on the other hand, was just easy as pie. Yes, my palms took some beating some of the days but in terms of conceding byes due to my fault or failing to latch on to a catch, fast bowlers were just no problems for an agile athletic guy like me.
PS: What does AWTA mean ?