Poor rotation, low swinging arms and cross-overs are the major causes of shoulder injury.

不好的身体滚动，低摆臂和过中线是造成肩伤的主要原因。

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Morgan dribbled to the near post then sent an out-swinging cross in front of the goal.

WSJ: London Olympics 2012: U.S. Women Top Japan 2-1 to Win Soccer Gold Medal

Daniel Pudil whipped in a superb low out-swinging cross which Matej Krajcik slotted in at the far post.

BBC: Tottenham 1-1 Slavia Prague

Hearts keeper Marian Kello was called into action in the 50th minute for the first time when he made a fine save from Elebert's close-range header following an in-swinging cross from Flavio Paixao.

BBC: Sport - Football - Hamilton Accies 0-2 Hearts