Michael Crabtree (No. 15)
In his fourth year as a pro, the first-ever two-time Biletnikoff Award winner finally had his breakout season at the NFL level, finishing with a team-high 1,105 yards and nine touchdown grabs. Unfortunately, King Crab does not project to be available for the bulk of 2013, having sustained an Achilles tendon injury at OTAs.
He may return late in the year, providing SF with a boost heading into the postseason.
Anquan Boldin (No. 81)
With 10,165 receiving yards and 58 touchdowns over his illustrious NFL career, Boldin is one of the league’s most decorated wideouts. The 11-year-pro can carry the load, too. He is widely known as the fastest player in league history to hit 400 receptions (67 games), 500 receptions (80 games) and 600 receptions (98 games), per Ravens PR.
Now, coming off a dominating playoff run that resulted in his first world title, No. 81 will be the point man for San Fran’s receiving corps in 2013.If trends are any indication, Kaepernick should be targeting Boldin quite a bit.
Mario Manningham (No. 82)
Manningham is best known for his Super Bowl heroics that landed the New York Giants their second world championship this decade. However, as a No. 3 option for most of his pro career, the former Biletnikoff Award finalist from Michigan has yet to put it all together over a 16-game season.
It will be tough this year too, as he recovers from a season-ending knee injury (ACL, PCL). As of May, Manningham began running and cutting, but his availability for Week 1 is still hanging in the balance, via NFL.com.
Kyle Williams (No. 10)
In his fourth season (in what is a contract year), San Fran is going to lean on Williams for production in a big way. Coming out of Arizona State, No. 10 was a speed demon, clocking in the low 4.3s before the draft, via NFL Draft Scout. He also happens to be the top veteran wideout on the roster with Crabtree sidelined.
Now partnered with a big-armed quarterback who looks downfield, Williams will finally have an opportunity to see his potential in this spread offense, à la Victor Cruz or Steve Smith.
A.J. Jenkins (No. 17)
It is tough to profile Jenkins at the NFL level without mentioning: “first-rounder” and “zero catches.” Another way to look at his situation would be to say that he has a totally clean slate. The ‘Niners are still waiting to see what kind of player Jenkins will become at this level.
Moreover, with Crabtree out, the 49ers will spread the ball around more than they thought was possible. This will provide the speedster from Illinois with his window of opportunity. Jenkins will be among the active on game day in what is setting up to be a defining year for the second-year receiver.
Quinton Patton (No. 11)
Coming from the Air Raid offense at Louisiana Tech, Patton is a perfect systematic fit for San Francisco’s new-look spread attack. From 2011-2012, he was one of the most productive receivers in college football, racking up 183 receptions, 2,594 yards and 24 scores in 25 games played. This fourth-round steal will compete for a prominent role right away.
Ricardo Lockette (No. 18)
This undrafted free agent from Fort Valley State—entering his third NFL season—is the lone height/weight/speed receiver on the 49ers roster. Lockette (6’2”, 211 lbs.) blazed a 4.26 40-time before the 2011 draft, which piqued the interest of scouts, thinking he had potential to be molded into a vertical threat.
He has two career receptions for 105 yards and a touchdown in his only two games played, which included no starts. He has an uphill battle but remains a top sleeper to make the final roster.
Chuck Jacobs (No. 1)
The 49ers acquired more speed via the undrafted free-agent wire, signing Utah State’s Chuck Jacobs. In two seasons in WAC, the wideout finished with 61 grabs, 826 yards and seven touchdowns. If the rookie can find his stride in camp, he will give Lockette a run for his money for that final WR slot.
However, there is a high probability he winds up on the practice squad, at best.
Marlon Moore (No. 19)
This is the third and final ex-WAC receiver brought in by San Francisco this offseason (Patton, Jacobs). At 6’0”, 190 pounds, Moore enters his fourth season in the league and first with the ‘Niners. In 23 games played for the Dolphins (2010-2012), the Fresno State product racked up 12 catches for 244 yards and a pair of touchdowns.
Kassim Osgood (No. 13)
The motive behind this decision was to beef up the special teams coverage unit, in dire need of a rebirth. Osgood (6’5”, 220 lbs.) is an 11-year pro who has made a name for himself on special teams, being named to the Pro Bowl three times with the Chargers and Jaguars. That’s his ticket to making the final 53-man roster.
Chad Hall (No. 14)
At 5’8”, 187 pounds, Hall functioned as a practice clone for quicker slot guys like Victor Cruz, Danny Amendola and Percy Harvin in 2012. The only week he suited up was the NFC title at Atlanta—and he was not a factor on game day. It would be surprising if Hall managed to stick around for another season.
Charly Martin (X)
Shortly after releasing TE/LS Kyle Nelson, who was picked up by the Seattle Seahawks, the 49ers claimed Martin, who was waived by the team. This swap made Martin the latest addition to San Fran's roster entering camp. The 29-year-old had four catches for 42 yards in 2012.