SANTA CLARA -- Forty-one players took part in drills during the 49ers' rookie camp over the weekend.
[RELATED: 49ers rookie camp roster]
And all of those players, including 16 invited to try out for spots on the offseason 90-man roster, were given a lot of attention and thorough evaluations.
There is plenty of motivation for coach Jim Harbaugh and general manager Trent Baalke to make the right decisions when it comes to ultimately settling on the 49ers' final roster.
"Give them a chance to make the football team and evaluate, because we don't want to cut anybody that's going to come back and beat us on another football team," Harbaugh said.
A year ago, the 49ers featured a strong group of rookie wide receivers. Nathan Palmer and Chris Owusu were among the 49ers' final cuts. Palmer (Indianapolis) and Owusu (Tampa Bay) both landed on NFL rosters.
Based on the rookie camp, the most likely undrafted receiver to turn some heads is Chuck Jacobs of Utah State. Jacobs impressed with his quickness off the line of scrimmage.
But the strength of this 49ers undrafted rookie class appears to be at cornerback. Darryl Morris (Texas State) and Lowell Rose (Tulsa) both looked very good. And seventh-round Marcus Cooper (Rutgers) also demonstrated plenty of ability.
Cooper, Morris and Rose were not invited to the NFL scouting combine. Cooper has size (6 foot 2) and ran a 4.45 time in the 40-yard dash at his pro day. Morris (5-9) has blazing speed, as he demonstrated with a 4.33 at his pro day. And Rose has a combination of size (6-0 1/2) and nifty footwork, along with 4.56 speed.
Morris and Rose were both looking forward to getting to work with the veteran players. Most of the rookies are allowed to begin working at 49ers "football school" on Monday.
"I'm looking forward to meeting all of the secondary," Morris said. "Just to be able to pick their brains and watch them on the field. That's really going to be the best way for us to learn to see the guys who've been there and done that."
Both Morris and Rose had offers to sign with other teams, but both elected to sign with the 49ers for signing bonuses of $8,000.
"They got great coaches here, we got great guys ahead of us to learn from, like Carlos Rogers and Nnamdi Asomugha," Rose said. "It's just a great fit. Just being able to ask them questions will help a lot. The coaches tell you everything you need to know, and the players can give you slight little tips that the coaches might forget to give you in meetings."
Asomugha, a 10-year veteran, has already turned some heads with his willingness to spend time after practices during the 49ers' offseason program with younger cornerbacks, such as Tramaine Brock and Perrish Cox.
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--Most of the draft picks and other players under contract who participated in the rookie camp are allowed to begin attending the 49ers' offseason program. One exception is wide receiver Quinton Patton, who can begin his full-time participation next week. NFL rules stipulate that a rookie is not allowed to take part in the team's offseason program until after his school has held its commencement ceremony.
--The only veteran regulars who have not participated in the 49ers' offseason program are center Jonathan Goodwin and cornerback Tarell Brown, whose offseason routines consist of working out near their offseason homes.
--The 49ers had two quarterbacks at the rookie camp. The 49ers have not offered a contract to Nate Montana, who participated on a tryout basis. Montana is the son of Hall of Famer Joe Montana. He said he chose to try out for the 49ers instead of the Cincinnati Bengals. Both teams held their rookie camps over the same weekend.
--Running back Marcus Lattimore (knee), tackle Luke Marquardt (foot), and defensive linemen Tank Carradine (knee) and Quinton Dial (toe) were not medically cleared to take part in any drills during rookie camp. The 49ers plan to take their time with Lattimore, in particular, who said he would understand if the 49ers decide to sit him out for the entire 2013 season.