Leave and block

The leave. Note the batsman's head focussed on where the ball had bounced. The bat and hands are held well out of the way of the ball.The leave is sometimes considered a cricket shot, even though the batsman physically does not play at or interfere with the ball as it passes him. The leave is likely to be used by batsmen during the first few balls they receive, to give themselves time to judge the conditions of the pitch and the bowler before attempting to play a shot. Leaving a delivery is a matter of judgement and technique. The batsman still has to watch the ball closely to ensure that it does not hit him or the wicket; he also has to ensure that his bat and hands are kept out of the path of the ball so that it cannot make accidental contact and possibly lead to him being out caught.

Having taken a long stride, a batsman blocks the ball with a forward defensive shot.A block stroke is usually a purely defensive stroke designed to stop the ball from hitting the wicket or the batsman's body. This shot has no strength behind it and is usually played with a light or "soft" bottom-hand grip and merely stops the ball moving towards the wicket. A block played on the front foot is known as a forward defensive, while that played on the back foot is known as a backward defensive. The application of these strokes may be used to score runs, by manipulating the block to move the ball into vacant portions of the infield, in which case a block becomes a "push". Pushing the ball is one of the more common ways batsman manipulate the strike.
Leaving and blocking are employed much more often in first-class cricket, as there is no requirement to score runs as quickly as possible, thus allowing the batsman to choose which deliveries to play at.