Recognising spin

sir i want to ask that many times our opponent serves reverse side spin. so how could we know the serve is over spin or under spin.

Hi Mayank,

You need to watch the contact of the bat on the ball and then also watch the flight of the ball.

If they contact over the ball slightly then it will have topspin with the sidespin.  If they contact under the ball then it will have backspin.

The topspin will also have a more dipping flight on it.  After it comes over the net it will go down quicker than the backspin serve.  It takes a while to be able to recognise these things quickly, but if you focus on it and keep trying to receive a whole lot of different players serves you will start to recognise the spin easier.