There's news about David's injury - and it's bad news...
According to Danny Miche and Guillermo Salatino, David's spokesman Bernardo Ballero has confirmed that the injury David has suffered is a tear in his left abdominal oblique muscle (close to the intercostal area that was previously mentioned).
The estimated recovery time is 3 weeks.
Therefore, even though David will start with kinesiological exercises today, it looks like he probably won't be ready in time for the Davis Cup semifinal tie, due to start in 16 days.
A statement relased by his press team says that Nalbandian arrived in Argentina on Wednesday [i.e. today] and underwent medical examinations. "Unfortunately, they showed that David has suffered a tear in the left abdominal oblique muscle. Therefore, together with his team he has already begun with the kinesiological treatment for his recovery," it says in the text.
According to the statement, David said that he feels "deeply saddened" by the injury and he "hopes to take up training again as soon as possible".
It's the kind of news we haven't had in a long time - and now it comes at what's basically the worst possible moment. Apparently, David suffered an abdominal injury, either a distension or a tear in training (Edit: when exactly isn't clear yet).
And he has pulled out of the US Open. (Source.)
The Davis Cup semifinal might also be in danger.
Right now, the news situation is still chaotic. But I'll try my best to keep you posted.
Here's the official press relase from David's camp:
Due to an injury in the intercostal area [the muscles between the ribs] suffered during training, together with his team David has decided to withdraw from both the singles and the doubles of the 2012 edition of the US Open.
Nalbandian is scheduled to return to Argentina in the coming days to undergo a series of examinations in order to determine the severity of the injury and define the time required for his recovery.
On the subject, David said, "I'm very sad that I won't be able to take part in the last Grand Slam of the season, and I hope to be there for the Davis Cup tie against the Czech Republic in September."