Albert Haynesworth was sidelined last week by a condition called rhabdomyolysis, the Washington Post's Jason Reid reports. The condition causes "the rapid breakdown of skeletal muscle because of injury to muscle tissue."
Asked about the reports that Haynesworth has rhabdomyolysis, Shanahan said: "Not aware of that."
Shanahan went on to reiterate a point he has made before: Haynesworth has to practice if he wants to play.
"Albert has gotten away in the past with playing without practicing," Shanahan said. "That will not happen under this regime. If he's going to play, he's going to practice, and that is the same with every player here. The days of him playing without practicing are over."
Experts contacted by Reid say that the fact that Haynesworth played on Saturday suggests that he is better now -- and that it may explain his problems passing a conditioning test earlier in the month.
Venting some steam in a post-game interview on Saturday, Haynesworth hinted at larger medical conditions than "headaches" -- scare quotes his -- though he did not elaborate on the issue. Haynesworth, who has a seven-year, $100 million contract with the Redskins, complained about playing into the third quarter of the preseason loss against the Ravens.
It is unclear whether Haynesworth's condition will affect his production against the Dallas Cowboys in the regular season opener -- a match likely to prove more difficult than an exhibition match agaisnt the Ravens.