Sentence:  Prior to this match, Albion had only scored three league goals all season, but Wes Brown's <WSD>lax</WSD> marking allowed Morrison to head in their fourth from a Chris Brunt free-kick and then, a minute later, the initial squandering of possession and Michael Turner's lack of pace let Long run through to slot in another. 
Meaning of the word marked with <WSD> tags:  Lacking care; neglectful, negligent.