Southampton recorded their biggest victory of the season as they beat ten-man Blackburn Rovers 4-0 at St Mary’s on Saturday. Russell Martin‘s side were dominant, but the game was made much more comfortable by Blackburn’s Callum Britain’s moment of insanity as he kicked the ball away for a second yellow card on 55 minutes. Southampton were 1-0 up at that stage thanks to Sam Edozie’s second goal in as many games, but the game was relatively in the balance until the sending off. From then on, Southampton were much more clinical than we have seen this season, as Stuart Armstrong, Sékou Mara and Ca…