Cricket is a team sport and that also does not mean that only the eleven players on field are responsible for the winning or losing of the team.
Hierarchy is there but one cannot survive without the other. Rohit Sharma, the Indian team captain is an opener and can pile up runs but the most important person in Indian cricket can also not come to bowl the final over of the match while trying to defend say 10 runs.

Marshalling the troops, knowing when to use which resource, reading the game, taking spontaneous decisions, anticipating the moves of the opposition, and being always read with a Plan B, is the true trait of a good captain.
His personal relation with the players, the decorum and the mood in the camp he maintains reflects on the cricket ground.
In an event as big as the Asia Cup, there could be frustrating days on the field. There are also times when the best of plans also don't work, and teammates end up showing their frustration on each other. The role of the captain takes centre stage once again.
Once off the field, it's important for the captain to make sure that each of his players has left everything related to the match at the ground.
The form of captain also holds the key at big events. A performing captain inspires the team to the next level. Role of captain is clearly bigger than that of a coach in the sport of cricket.
The coach and support staff play an equally important role. Though not involved in the action directly, they are like the shadow to these players when they are preparing for the battle.
The game has changed completely. Fitness, analysing the strength and weakness of a player/team in the most statistical form, preparing modules (batting, bowling and fitness) as per the requirements of different players is a tedious task.
Rahul Dravid is the current India coach and fortunately he holds a stature as big as Virat Kohli and Rohit Sharma. But someone like batting coach Vikram Rathour has an experience of playing just 13 odd matches for India. For someone like Rathour it becomes necessary to put his point with utmost authority.
Junior players in the team also seek help from seniors instead of going to the appointed batting coach. Here, the less known names in the role need to be always on their toes to highlight an error and show how to work across it.
The team physios play an equally important role. The game has become fast and one cannot survive without training the body to be its best. The likes of Virat Kohli have gone on record to credit team physios for always being there to guide them and train them for nail-biting encounters.
Even the person looking after the logistical needs of the team - like where they are staying or how they are commuting - also helps the players to focus just on the game. Each person with the team is equally important.
Last but not the least, the selectors play a massive role as well. Choosing the correct team is a tedious task. One needs to cover all the departments of the game. Selecting players per the conditions matches will be played in is also one factor.
A spin bowling all-rounder becomes more important in sub-continent conditions than a pace-bowling all-rounder. Having a mix of right-hand and left-hand batters is also important. In case of injury, finding the perfect replacement can give headaches. For example, the Indian selection committee is in a dilemma due to the injuries of KL Rahul and Shreyas Iyer.
To prepare a recipe, providing the perfect ingredient is important. Therefore, selectors very well have the most important role to play.
Winning a bilateral series is one thing and winning a multi-nation tournament is another. Captain, coaches, support staff, selectors and players all have to work in the same direction to achieve success.