Man City v Arsenal (16:00 BST)
After their 3-2 Champions League defeat by Real Madrid, Manchester City have conceded 11 goals in six matches this season, which I put down to some of Roberto Mancini's selections rather than the systems he has employed.
I cannot believe that Mancini did not identify that both Marcelo and Cristiano Ronaldo were running riot against Maicon, who looked seriously short at right-back.
That was the cause of most of City's problems against Madrid because half the time Vincent Kompany was playing centre-back and half the time he was playing emergency right-back. Tactically Mancini got that completely wrong and did not do enough to address it.
I don't understand why he gave a debut to Matija Nastasic in defence at the Bernabeu instead of picking Joleon Lescott. Nastasic looks decent but it still felt odd.
And Mancini also worried me the other week when he went to Liverpool and played a 3-5-2. Kolo Toure was on the right of the back three and was up against Raheem Sterling, when Pablo Zabaleta was perfect for that role.
Still, playing Arsenal should concentrate Mancini's mind. He has had a few days to lick his wounds, and I cannot see him messing around this time - he will play his strongest team.
The Gunners have had a great start to the season and will be full of confidence although I have to say that on Tuesday against Montpellier, Per Mertesacker got away with a couple of things in that game which I think the likes of Carlos Tevez will punish him for. That is why I fancy City to edge this game.
Prediction: 2-1