Chelsea coach Mauricio Pochettino says that his team have themselves to blame for not being nasty and clinical enough in their 2-0 Premier League defeat to Brentford on Saturday, October 28 at Stamford Bridge. Ethan Pinnock scored the first goal of the game in the 58th minute and Bryan Mbeumo made it 2-0 in the 96th minute. The result condemned the Blues to a fourth defeat of the season as they…