In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

Sportsmail's Graham Poll runs the rule over the big decisions made by referee Bobby Madley during Southampton's 3-1 win against Chelsea at Stamford Bridge on Saturday. Madley clearly decided that he wasn't going to give anything but 'nailed on' penalties which he was 100 per cent sure of. As a result, it was Southampton who suffered rather than Chelsea. This was a clear penalty as the Chelsea defender held his opponent's shirt as a free kick was swung into the penalty area. Madley was poorly positioned as he was too narrow and, as a result, was not viewing the area where the ball would be played into.Chelsea 1-3 Southampton: CLICK HERE to read the match reportJose Mourinho complained about referee Bobby Madley afterwardsSportsmail's Graham Poll delivers his verdict on the key decisions 
 Question:He was wrong to do so as _ gained massively by Madley's officiating, as they had against Arsenal.
Chelsea