Southampton are approaching a crucial run of fixtures and Russell Martin knows his side can waste no time in getting points on the board starting with Manchester United on Saturday. Southampton are 19th in the Premier League after three games, with only Everton below the newly-promoted side. 1-0 defeats to Newcastle United and Nottingham Forest were followed by a 3-1 loss at Brentford where Russell Martin did at least witness his team score their first league goal of the campaign. Against Newcastle, Southampton fell victim to a huge Alex McCarthy error to lose 1-0 against ten men, whilst they …