Brady Henderson ESPN
With Seahawks rookies reporting early for training camp on Wednesday, the team placed four of them on the Physically Unable to Perform list: safety Marquise Blair (hamstring), guard Phil Haynes, linebacker Ben Burr-Kirven (sports hernia surgery) and defensive tackle Demarcus Christmas. Guard Demetrius Knox (foot) was placed on the Non-football Injury list. Only players who go on PUP at the start of camp are eligible to begin the regular season on PUP, in which case they'd have to stay there for the first six weeks of the regular season before being eligible to play. But players can come off PUP anytime between now and the end of the preseason. So a move to PUP now is about maintaining roster flexibility. Of the five rookies, Blair, a second-round pick, has the best shot at winning a starting job if healthy.