Thoughts on our matchball...
edit: and as a matter of fact this new ball is based on the EURO2008 ball which itself is based on the +teamgeist used in 2006
the big difference is a more grippy surface to support keepers catching balls (!) and different segmentation of the surface parts
I don't think that's the case – if I remember what I've read rightly, it's an entirely new design from the teamgeist – eight panels instead of fourteen and all that.
for example the in the dutch, swiss, german and portugese leagues the new ball was already used and evaluated ... and guess how many complaints ? yeah ... NONE
But you're quite right on this count – the ball has been used in many leagues as the standard matchball for the past season.
You obviously know German football better than I do, but I think it's the case (and please correct me if I'm wrong) that the Bundesliga doesn't have a standard ball used throughout the league, as is the case in other competitions such as the English Premier League, Italy's Serie A or the Spanish La Liga (all of whom are contracted to use Nike balls, I think I'm right in saying). In Germany the teams themselves supply the matchball for their home games, and obviously the German Adidas balls are going to be a popular choice. Certainly, Bundesliga based players (ie, the whole German squad) are obviously practised in using them and as you say there haven't been any complaints from them about the ball's behaviour in league play, nor from players in the other leagues who use the ball.
I think the problem is simply that a football – any football – behaves differently at altitude. The air is thinner, the pressure is different, and other stuff (I went to art college, that's as scientific as I get
😛). This problem could well be amplified by the ball design, it's supposed to be rounder and more aerodynamic so this may add to the unpredictability in the thinner air. Could it be just coincidence that the team who have arguably impressed the most so far in this World Cup – Germany – not only has a squad consisting entirely of players who are used to playing with the Jabulani ball, but played their match at sea level where altitude isn't a factor?
It should also be noted that many of the complaints about the ball surfaced during the pre-tournament training camps, most of which took place at altitude as the players acclimatised for South Africa. Also, looking at the list of players whose complaints took most of the headlines, most play for club sides in leagues which haven't been using the Jabulani. For example, looking at the ball's Wikipedia page (not a definitive source of knowledge I know but it serves to to get a rough sample), all of the 10 players who are quoted as being critical of the ball play in leagues where Nike or Mitre balls are used, not Adidas.
Finally, the Jabulani has been available from the start of the year for teams to train with – however, a number of nations have opted not to practise with it until the very eve of the tournament, and England are among them. So, if we're taken by surprise by it we can have little complaint.
Unusual these days. Brazil's starting lineup features the numbers 1 through 11.
That's one tradition I'm glad the England team stick to, at least outside of tournaments where squad numbers are submitted in advance.