M. Pochettino: "On bad days we can look very bad © PA

London's "Chelsea" suffered their biggest defeat in the club's history in the London derby on Tuesday, losing 0-5 to London's "Arsenal" team.

After the defeat, "aristocrats" coach Mauricio Pochettino said that his team lacks stability, and on bad days his team can look very bad.

"We are very unstable, that's why we are in such a position in the league table. We had a great match against "Manchester City" over the weekend, but after that comes such a defeat. On bad days, we can look very bad. It's even hard to say something."

"We played great in the FA Cup semi-finals. Nobody says you can't lose against "Arsenal", but we must show fighting spirit and character," said M. Pochettino.