I don't want Dhoni sacked from the team altogether (I am a big Dhoni fan). I want him to continue as our ODI captain. He is still pretty solid at that. But I feel he needs to be changed (as far as captaincy goes) as far as tests and T20's go. His game has changed drastically and is now not suited for T20's at all.
Regarding Fletcher, the background staff definitely have a big role to play in the environment of the team and subsequently, its performance. As Epic said, Dhoni-Kirsten worked, but Dhoni-Fletcher hasn't. And we have endured two major whitewashed, and various failed tournaments where we didn't even reach the finals (or semis in case of the World T20). I didn't even ask for Fletcher to be sacked NOW. I was just posting that I want Fletcher's contract not to be renewed after the upcoming 6 months. Is that a bad thing to ask? Don't sack him. Just let his contract run out, and JUST DO NOT RENEW IT.
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India got to their highest under whom? Dhoni? Or someone else? And, if the new coach does what Greg Chappell did then? Or, if he is even worse then? Sai, you're so over reactive. Nothing personal but, just saying.
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And, what is the guarantee India will do better after getting a new coach and captain? Or, are you some of those astrologers who knows the future?
I am not being over reactive, buddy. I was never a big supporter of Fletcher's appointment as our coach. It totally came out of the blue (when suddenly Fletcher became our coach). And seeing our performance in the past year or more, my disgust for Fletcher has only grown. If you don't believe the coach and his support staff don't play a role in the team's performance, then why do teams have them at all? Even today, the coach's role is pretty important.
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Going by this theory, no change should ever be encouraged!
As far as the coaching is concerned, I don't think it makes a huge impact at the international level. It surely does makes an impact on younger players, certainly not on the senior pros. You can't expect a new coach coming in and asking Tendulkar, Sehwag, Gambhir or Dhoni to change their style of batting. But a new coach can guide youngsters; and as far as the performance of young players is concerned, it has been pretty good.
When it comes to senior pros, the coach's primary job with them changes. With them, its a case of keeping them on their toes, encouraging them, being proactive in guiding them during their training, etc.
I bet the international coach does the same even with younger players. You are not going to come into the international team and learn batting or bowling or fielding with the international coach.