Wide receiver Kyle Williams and running back Kendall Hunter, both of whom sustained season-ending injuries on the same play in late-November against the New Orleans Saints, were placed on the active physically-unable-to-perform list to open training camp on Saturday, the club announced.
The rookies reported Friday for training camp. The veterans are scheduled to follow on Wednesday with the first full-squad practice scheduled for Thursday at the team's practice facility in Santa Clara.
In addition to Williams (knee) and Hunter (Achilles), the 49ers placed wide receiver Mario Manningham (knee) and inside linebacker Darius Fleming (knee) on the PUP list.
The 49ers also placed four players on the equivalent of PUP for rookies -- active/non-football injury. Those players are running back Marcus Lattimore (knee), defensive linemen Tank Carradine (knee) and Quinton Dial (toe) and tackle Luke Marquardt (foot).
Players on PUP and NFI count against the 90-player roster limit and can be activated to practice at any point in training camp. Only players who go on PUP or NFI at the opening of training camp are eligible to begin the regular season on reserve/PUP or reserve/NFI. Those players must miss at least the first six weeks of the regular season.
Wide receiver Michael Crabtree was not placed on PUP on Saturday. He is scheduled to report to camp with the veterans on Wednesday. Crabtree is ticketed for a late-season return after he sustained a torn right Achilles tendon during offseason workouts on May 21.
The 49ers can place him on injured reserve with a designated return upon the cutdown to 53-man rosters at the end of the exhibition season. Or, if the 49ers place him on active/PUP on Wednesday, they could move him to reserve PUP. Any player who is placed on reserve PUP to open the season is eligible to return to action at any point from Week 7 to Week 13.
Williams and Hunter were both cleared to take part in individual drills during the offseason program. Williams even ran some pass routes at half speed during 11-on-11 drills during the 49ers' mandatory minicamp. Both players are expected to be activated early in training camp.
Several players who missed the offseason program due to offseason surgeries were not placed on the PUP list, including Justin Smith (triceps), Aldon Smith (shoulder), Ahmad Brooks (shoulder), Mike Iupati (shoulder) and Joe Staley (knee). Those players are also scheduled to report with the veterans on Wednesday.