The official English Twitter account of German club Bayer Leverkusen, whose former goalkeeperBernd Leno represents Arsenal starting this season, had a cheeky reply of their own to Cech's gaffe. He has experience, he has quality, he has the capacity'.
According to reports in the Star, Unai Emery is unhappy with the weight of some of his players in the Arsenal squad and believes they are "too fat".
After taking over from Arsene Wenger, Emery has emphasised the importance of using the goalkeeper to help play the ball out from the back, and it was clear that his players are still getting used to the new system.
Bernd Leno joined Arsenal from Leverkusen over the summer for a reported £19.2m.
Looking ahead to Saturday's London derby, Emery made it clear that finding his feet at Arsenal is going to take time.
He also failed to make an attempt to stop Raheem Sterling's goal, prompting a lot of criticism from fans, who called for new signing Berndt Leno to start. However, it is not an excuse for some of the things we saw.
Earlier in the day, Spurs entertain Fulham at Wembley, but Chelsea vs Arsenal is undoubtedly the big one when it comes to Saturday's clashes involving two London teams. This week Nacho Monreal is working every day, training every day with us.
The Gunners began life under the Spaniard with a 2-0 defeat at home to Manchester City last weekend, but their is no shame in that, considering the quality of Pep Guardiola's side. Luckily for the Gunners, Nacho Monreal has returned to full training and could deputize against Chelsea, or Stephan Lichtsteiner could move over from right back to play left back.
Air Quality Advisory for Metro Vancouver, Fraser Valley
University of Washington atmospheric scientist Cliff Mass called attention to the high levels in a blog post today . Although we could have some clearing tonight , with so much smoke around it will likely linger through Thursday.
Uefa Super Cup 2018, Real Madrid vs Atletico Madrid
It was the was the quickest goal ever scored in a UEFA competition final, and set the tone for the night. But Courtois will be line to make his debut in Sunday's La Liga clash against Getafe at the Bernabeu.
NASA launches first mission to 'touch Sun'
The Parker Solar Probe's goal, Dr Fox has said, is to "finally go and understand how our star works" - "to touch the Sun ". The first week of the mission will require the spacecraft to perform some tasks.