'Jumped out once again' refers to the way he attacked the ball (as he had done when he hit the six) however on this occassion he 'checked his shot', that is, he hesitated, allowing the fielder to catch his ball.
'Crossed over' means (I think!) that he had moved to the receiving end to face the bowler.
'Ilk' means type or kind. In other words he was similar to Mark Boucher in his style of play.
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