<Li> <P> The popping crease is visible here, with England's Marcus Trescothick playing a shot that has involved him moving forward over his own crease to intercept the ball . In taking a successful run, he must ground his bat behind the corresponding crease at the other end of the pitch, and his batting partner must in turn ground himself behind Trescothick's crease . Should Trescothick have ventured beyond his crease in playing his shot, he risked being stumped . </P> </Li> <P> The popping crease is visible here, with England's Marcus Trescothick playing a shot that has involved him moving forward over his own crease to intercept the ball . In taking a successful run, he must ground his bat behind the corresponding crease at the other end of the pitch, and his batting partner must in turn ground himself behind Trescothick's crease . Should Trescothick have ventured beyond his crease in playing his shot, he risked being stumped . </P> <Li> <P> Jim Allenby bowling, he must ground some part of his foot behind his popping crease and within the return creases for the ball to be a legal delivery . As a member of the fielding side, he can also attempt to run out a batsman by breaking the stumps with the ball before the batsman manages to return to the popping crease . </P> </Li> <P> Jim Allenby bowling, he must ground some part of his foot behind his popping crease and within the return creases for the ball to be a legal delivery . As a member of the fielding side, he can also attempt to run out a batsman by breaking the stumps with the ball before the batsman manages to return to the popping crease . </P>

The thickness of the cricket ball is measured by