A-Rod continues to be at war with the Yankees over whether or not he's injured. He got a second opinion on the quad strain that Yankees doctors supposedly found, the doctor he got a second opinion appears to have told A-Rod that there is no strain, and A-Rod appears to have given the doctor permission to release that diagnosis to the public.
http://www.sbnation.com/mlb/2013/7/2...-strain-doctor
This is now the second time that the Yankees have claimed that A-Rod is hurt and he's publicly stated that his doctors are saying he's healthy. If A-Rod was injured indefinitely, and unable to play baseball again, it would benefit the Yankees greatly as they'd be able to collect nearly $100 million in insurance in his contract. However, if the Yankees are making up an injury to collect the insurance money, that would be insurance fraud which the Yankees could face legal penalties for.
A-Rod's impending ban appeal is also high stakes for A-Rod and the Yankees. A-Rod could potentially have the $100+ million left on his contract voided and the Yankees might not have to pay any of it.