Michael Regan/Getty Images
Jack Rodwell would have learnt against Southampton that you can't switch off for a second in the Premier League, especially if you're playing for the Champions.
He was directly responsible for the goal that put the away side 2-1 up, with his sloppy uncalculated pass affording the Saints a golden opportunity for an incredibly effective counter-attack.
When playing the ball around in the final third, players need to be aware of who's covering defensively and how many opponents are primed to break and hit their team on the counter.
It's something every other player for City was clearly aware of, but for poor Jack Rodwell, he failed to think before hitting that pass.
Had that Saints goal been the winner, it would've been Rodwell's inexperience that would've cost City the match.
Besides that mistake he held his own, he put in a great first-half tackle to prevent a potential goal. But overall, his lack of pedigree and experience compared to his teammates led to a very conservative style of play, which meant he had very little influence on the match.
He did have a great pass success rate of 96 percent from an impressive 93 passes (89 completed) (h/t WhoScored?com), but a significant chunk of those were either sideways or backwards.
His inexperience led to his team conceding, while going forward, he contributed nothing, as he made no risqué moves, hitting zero key passes (chances created).
Chances are, Gareth Barry or Nigel De Jong wouldn't have made the same costly, goal-conceding mistake, while Barry averaged at least one key pass per game last season.
If City are to start with Jack Rodwell in future matches, they need to play him in matches they can afford to lose, unless he starts learning quickly.