Petr Cech says Chelsea are now Manchester United's main Premier League title rivals because Arsenal have blown too many chances to catch them.
Cech helped the champions beat Birmingham 3-1 at Stamford Bridge on Wednesday night, while the Gunners squandered yet another two-goal lead to draw the north London derby 3-3 at White Hart Lane.
Those results saw Chelsea edge above Arsenal into second place on goal difference and close to within six points of United.
