Now he's wondering if he'll ever play again. After his release, he sought a second opinion from Bostonbased concussion expert Robert Cantu. Utecht said it will be weeks before Cantu determines whether to clear him.Ravens ParadeBALTIMORE, MD FEBRUARY 05: Linebacker Ray Lewis 52 of the Baltimore Ravens celebrates with The Vince Lombardi Trophy as he and teammates celebrate during their Super Bowl XLVII victory parade at M Bank Stadium on February 5, 2013 in Baltimore, Maryland. The Baltimore Ravens captured their second Super Bowl title by defeating the San Francisco 49ers. (Photo by Patrick Smith/Getty Images).

But just like today's betterinformed cohort, most of them played without dwelling for long on the consequences. We can argue whether Goodell has been an honest broker. On the one hand, he hired independent experts to study the concussion problem not long after taking over, instituted brain baseline testing and standardized reporting and preventive measures, even hel