Malinga, albeit unintentionally, came up with a whole new realm of swing bowling.
The credit for discovering curveball swing in cricket goes solely to one man, Lasith Malinga. Malinga, albeit unintentionally, with his round-arm action tilted the axis of the ball and came up with a whole new realm of swing bowling. This way, the swing of the ball is completely independent of the condition of the ball or even the type of the ball (yes, it can even be a tennis ball!). The ball just needs to be spherical to swing.
Malinga and his slinging yorkers have disturbed plenty of batsmen's minds and stumps.
Magnus effect is the key scientific principle behind the working of a banana kick in football and a slice in tennis. In cricket too it has its application in explaining the functioning of curveball swing. When delivered with a round-arm action, the ball spins around the vertical axis instead of the horizontal axis, which is generally the case. The seam is tilted which leads to a lateral Magnus force due to the spin. The spin doesn't plays that much of a big role in conventional swing or reverse swing or contrast swing because unlike curveball swing the force is upwards instead of lateral. Once that axis is tilted, one can bowl inswingers to a right-handed batsman just because of the tilted axis and the spin.
The working of the Magnus effect, revolves around a ball rotating around a vertical axis, with the airflow assisting the downwards force on the right, and opposing the upward force on the left of the ball. This creates a current on the left side of the ball, causing the air to exert an opposing force on the right side making the ball swing into the right-handed batsman.