The 49ers' turnaround from a year ago has been dramatic. But the team certainly was not built overnight.
Reliable long-snapper Brian Jennings is the last holdover from the days of Terry Donahue as general manager and Steve Mariucci as coach. But there are players on the roster from five other 49ers regimes that included Dennis Erickson, Mike Nolan and Mike Singletary as coaches, as well as Scot McCloughan as the organization's top personnel guy.
And eight players remain from 2010, when current general manager Trent Baalke and Singletary joined forces to set the roster.
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Now that the NFL trade deadline has passed and the 49ers made no roster moves, let's take a look at how the team was built.
Listed are all players currently on the 53-man roster and receiver Josh Morgan, who had a large impact this season before sustaining a season-ending injury (includes general manager, head coach, year, and how player was originally acquired):
Terry Donahue/Steve Mariucci (through 2002)
LS Brian Jennings, 2000, seventh round
Terry Donahue/Dennis Erickson (2003-04)
CB Shawntae Spencer, 2004, second round
NT Isaac Sopoaga, 2004, fourth round
P Andy Lee, 2004, sixth round
San Francisco 49ers
Scot McCloughan/Mike Nolan (2005-08)
QB Alex Smith, 2005, first round
RB Frank Gore, 2005, third round
G Adam Snyder, 2005, third round
TE Vernon Davis, 2006, first round
TE Delanie Walker, 2006, sixth round
LB Parys Haralson, 2006, fifth round
LB Patrick Willis, 2007, first round
LT Joe Staley, 2007, first round
DE Ray McDonald, 2007, third round
FS Dashon Goldson, 2007, fourth round
CB Tarell Brown, 2007, fifth round
DE Justin Smith, 2008, free agent
G Chilo Rachal, 2008, second round
S Reggie Smith, 2008, third round
WR Joshua Morgan, 2008, sixth round
Scot McCloughan/Mike Singletary (2008-09)
LB Ahmad Brooks, 2008, waiver claim
FB Moran Norris, 2009, free agent
WR Michael Crabtree, 2009, first round
DT Ricky Jean Francois, 2009, seventh round
T Alex Boone, 2009, undrafted rookie
Trent Baalke/Mike Singletary (2010)
WR Ted Ginn, trade
T Anthony Davis, first round
G Mike Iupati, first round
LB NaVorro Bowman, third round
WR Kyle Williams, sixth round
RB Anthony Dixon, sixth round
CB Tramaine Brock, undrafted rookie
DB C.J. Spillman, waiver claim
Trent Baalke/Jim Harbaugh (2011)
LB Aldon Smith, first round
QB Colin Kaepernick, second round
CB Chris Culliver, third round
RB Kendall Hunter, fourth round
G Daniel Kilgore, fifth round
S Colin Jones, sixth round
FB Bruce Miller, seventh round
T Mike Person, seventh round
NT Ian Williams, undrafted rookie
DE Demarcus Dobbs, undrafted rookie
K David Akers, free agent
LB Larry Grant, free agent
CB Carlos Rogers, free agent
S Madieu Williams, free agent
C Jonathan Goodwin, free agent
LB Blake Costanzo, free agent
WR Braylon Edwards, free agent
S Donte Whitner, free agent
QB Scott Tolzien, waiver claim
LB Tavares Gooden, free agent
TE Justin Peelle, free agent
WR Brett Swain, free agent