I've known a lot of men who have ruptured their Achilles tendon, and some were just walking and it popped. I've been covering pro sports since 1987 and don't know of many 29-year-olds like Suggs who suffered the injury at such an early age. Former Ravens center-guard Wally Williams suffered the same injury, and he was simply stretching and doing some light jogging over at the training complex during an offseason.
Ravens coach John Harbaugh may warn his players about playing other sports, but they're still going to do whatever they want unless there are stipulations in the contract, and those stipulations will be hard to get. Ray Rice played in a charity basketball game last month and had no injuries. But he was at risk, right? Ben Grubbs had a charity softball tournament last offseason. Wasn't he at risk, especially as a player with a history of ankle injuries?
You can't babysit these guys. Injuries happen all the time, some during the season and some out of season. The good news is that on Thursday, Suggs was already mentally strong and talking about his comeback. He vowed to play again this season. He usually makes good on his promises, and I'd be more concerned about his rehabilitation then how he injured his ankle. He said he wasn't playing basketball, and if he was, so what?
Basketball is good for training. As for the Achilles tendon, you could just as easily snap it walking up the stairs as playing basketball.