Sentence:  Alex Song launched a long ball forward from the back and the winger took it down nicely on his chest. He cut across the penalty area from the right and after one of the three defenders in his <WSD>wake</WSD> failed to make a meaningful clearance, the Oxlade-Chamberlain was able to dispatch a low left-footed finish into the far corner. 
Meaning of the word marked with <WSD> tags:  The area behind something, typically a rapidly moving object.