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The awesome role of backspin in swing bowling and dipping yorkers: A thread.

If you've ever bowled any kind of seam in your life, you know that your fingers impart a backward spin on the ball as you release it.

Turns out, this is important in multiple ways.

First up, releasing the ball with backspin gives it rotation about its horizontal axis, much like a cycle wheel.

Much like a wheel, this enables the seam to stay upright (or slanted) without wobbling.

This is conservation of angular momentum.

This is important, because if the seam is wobbling around, it's almost impossible to get swing.

So your fingers naturally put backspin on the ball, which keeps the seam well-behaved, in a line, which is essential to even generate swing.

Turns out, this is not the only way it's important.

Remember when they talk about bowling fuller when it's swinging?

That's to give the ball more time in the air. More time = more swing = more lateral movement. Also, late swing.

Fine. But what does backspin do?

Backspin enables the ball to hang in the air for longer.

Why? Because of something called the Magnus effect.

The Magnus force is due to this backspin, and it lifts the ball.

The ball hits the ground later than it would if there were no backspin.

I was sent a copy of the so-called Super League document earlier today and have spent the afternoon doing some number crunching on it.

A few key takeaways

(1/)

The plan would guarantee massive income to a 15 club elite and cement financial gaps not only between those competing in the Super league and those not, but within it.

(2/)

The plan envisages one off payments of up to €350 million to the fifteen founder members, but only six clubs would receive the full amount with five of the initial members receiving just €100 or €112.5 million.

(3/)

The 15 breakaway clubs have generously deigned to allow 5 merit based qualifiers each season. But the system is totally skewed against them. They have no say in running the Super League and are entirely excluded from a commercial pot worth 15% of income

(4/)

Moreover, there is an 'equal' share of revenue that is not equal at all. The qualifiers are excluded from half of this pot of money (worth around €1.85 BILLION)

(5/)

It's 16th of December, 2020. India is standing at the back of an ODI series loss and a momentum shifting win in the t20i series. It's time for the marquee Border Gavaskar trophy. The pink ball test, the boxing day, new year's test and the Gabba Challenge. Are we up for it?

Join me on a special thread where I take you through the series with the journey of the series. We shall look at the playing 11s, the game progressions, special strategies, important moments, standout performances.

Fasten your seat belt or don't, hop on anyway for 46 tweets ☺️

Match 1: Adelaide

Jadeja is injured so Ashwin becomes an easy answer for the tough question of the lone spinner. There are other tough questions as to who should be the 2nd opener, Gill who had good practice game or Shaw who scored a 50 in the last test he played? Pant or Saha?

India is going into the pink ball test with Pace trio Bumrah Shami Umesh. Shaw is opening and Saha keeping. A decision probably taken with the Wicketkeeping ability as the priority

Virat has one the toss and decided to bat. He has never lost a test match after winning the toss

Second ball of the first over and the nightmares turn true as Starc runs through Shaw. Mayank gets out after getting a start and then Virat stitches two gritty partnerships with Pujara and Rahane. Things turn bad only when Virat gets run out on an unfortunate wrong call by Rahane