And then they have a bunch of unknowns.
When the Packers practiced on Tuesday for the first time since Nelson was declared lost for the season, rookie Ty Montgomery opened with the Cobb and Adams in a three-receiver set. That was a change from the first post-injury snaps on Sunday at Pittsburgh, where Jeff Janis served as Nelson's immediate replacement.
"We're going to make things work," Cobb said. "We're going to find a way. I know our coaching staff I trust in them to come up with a game plan and scheme. It's on us to go out and make the plays and be able to accomplish what we're trying to accomplish."
From a purely physical standpoint, the 6-foot-3, 219-pound Janis best resembles Nelson (6-3, 217). Janis tested even better than Nelson did when both came into the league. At the 2014 NFL scouting combine, Janis ran the 40-yard dash in 4.42 seconds and jumped 37.5 inches in the vertical test. Nelson's numbers in 2008 were 4.51 seconds and 31 inches.
That might be where the similarities end, however. Janis was a seventh-round pick from Saginaw Valley State and Nelson a second-rounder from Kansas State. Nelson was NFL-ready. Janis was not. Nelson caught 33 passes as a rookie. Janis caught two.
"Obviously he's a tough guy to replace," Janis said. "I'm not going to try to step in and be Jordy Nelson. I'm just going to try to be me and help the team in any way that I can."
Still, there's potential in Janis, who has three career preseason touchdown catches (34, 33 and 25 yards), but his ability to mesh with quarterback Aaron Rodgers remains a question mark.
"I think just being on the same page with Aaron," Janis said. "I'm getting there. I'm not there yet. That's going to come along with now hopefully I can get some more reps with him and be in the same room and just listen to the things he has to say."
Montgomery (6-0, 216) looks like the most versatile of the group. He lined up mostly in the slot in college at Stanford but has practiced more on the outside since the Packers picked him in the third round this year. In the first post-Nelson practice, Montgomery was split out to the right with Adams wide left and Cobb in the slot left.
"I feel like I've mostly been in the slot," he said. "Mentally, it doesn't feel like that, though. I feel like I've played both outside and inside and I can do either one."
Montgomery looks -- and perhaps plays -- more like Cobb, and his teammates have raved about his versatility and ability to grasp the offense.
The fifth receiver spot looks at once wide open and muddled. White has been a two-time loser, getting cut at the end of training camp in both 2013 and 2014 only to return to the practice squad (and a short roster stint two years ago). Abbrederis has yet to even play in a preseason game, let alone a regular-season game, since he was picked in the fifth round more than 15 months ago. He missed all of his rookie season because of an early training camp knee injury and hasn’t practiced this camp since he sustained a concussion on the first day.
Perhaps Rodgers summed up that group best when asked after Sunday’s game at Pittsburgh how he felt about the receiver depth.
"Not sure yet," he said.