What are the ways bowlers alter the shine of the ball to achieve conventional swing?

 To achieve conventional swing, bowlers must alter the shine on the ball in a specific way. Here are the general steps involved:

1. Shine one side of the ball: The first step is to shine one side of the ball using sweat or saliva. The shiny side will be the side that the ball swings towards. Bowlers typically work on shining one side of the ball throughout the innings.

2. Keep the other side rough: The other side of the ball should be kept rough to help the ball generate swing. Bowlers can do this by keeping the ball dry or by rubbing it on the ground or their clothing. The rough side is the side that the ball swings away from.

3. Maintain the shine: Bowlers must maintain the shine on the ball throughout the innings by regularly shining the ball with sweat or saliva. This helps to ensure that the ball continues to swing in the air.

4. Bowl with the correct seam position: The bowler must also bowl with the correct seam position to achieve maximum swing. The seam should be angled towards the shiny side of the ball to help it swing towards that side.

By altering the shine on the ball in this way and bowling with the correct seam position, bowlers can achieve conventional swing and make the ball move in the air towards the shiny side of the ball. Conventional swing can be a powerful weapon for the fast bowler, as it can help them to deceive the batsman and take wickets. However, it requires a lot of skill and practice to execute successfully.