SANTA CLARA -- The 49ers on Tuesday released their first depth chart of the regular season, which listed Anquan Boldin and Kyle Williams as the starting wide receivers.
But, in reality, the 49ers' wide receiver position consists of Boldin as the No. 1 man and three others getting prepared to fill a committee role.
"I'll take on those responsibilities as the No. 2, but it's not going to be limited to me," Williams said. "We have play-makers, and you'll see all of us."
You'll definitely see Williams as the 49ers' No. 1 man when it comes to punt returns. He and rookie wide receiver Quinton Patton are also capable of handling kickoff returns, too.
Williams, Patton and Marlon Moore are expected to see significant action in different roles to match opposite of Boldin at the wide receiver positions.
"That's how we always do things," Williams said. "We do it by committee. It's hard when you got a guy like Crab (Michael Crabtree). He's definitely a No. 1-type receiver, so he's obviously going to be in there the whole time. You can say the same thing about Anquan. But the rest of us are going to be in there, too."
Crabtree will miss most of the season as he rehabilitates after surgery in May to repair a torn Achilles tendon. Also, Mario Manningham (knee) will be back at some point shortly after Week 6.
Boldin is the clear No. 1 receiver. A 10-year NFL veteran, led the Super Bowl-champion Baltimore Ravens with 65 receptions for 921 yards last season. None of the other wide receivers on the 49ers' 53-man roster has experienced much NFL success.
Williams did not play at all in the exhibition season. The 49ers brought him along slowly from season-ending surgery to repair a torn ACL. Williams said he is 100-percent ready for the season opener on Sunday against the Green Bay Packers at Candlestick Park.
"I just know he's quick and he's fast," Patton said. "He's very detailed in his routes and everything."
Moore earned his roster spot through a strong offseason, impressive training camp, his intelligence to pick up each of the different receiver positions and his strong play on special teams. He started each of the 49ers' four exhibition games.
"The coaches are confident enough in me to line up wherever I'm needed," Moore said. "If somebody needs a blow in a certain position, I'm not just defined to one spot. Whatever they need me to do, I can do it -- run deep, short, over the middle, run a slant, it doesn't matter."
Patton missed the first three weeks of training camp with a broken index finger on his left hand. He caught touchdown passes from quarterback Colin Kaepernick in his only two games.
Together, Williams, Moore and Patton expect to combine to supply production from the 49ers' No. 2 wideout position. Newly acquired Jon Baldwin and Chris Harper are not expected to have roles in the offense during the early part of the season.
"Everybody can make plays," Patton said. "We're interchangeable in a lot of ways. The good thing about our receiver corps, everybody can play every position.
"I think we fit good. Everybody has something to bring to the receiving corps. I think we're going to be pretty good."