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16. Trent Dilfer (2007)
Quarterback Trent Dilfer played his final NFL season with the 49ers in 2007.
After winning a Super Bowl with the Baltimore Ravens, in which his defense basically carried him, he bounced around a number of teams.
In his six starts with the 49ers he went 1-5. He threw for 1,166 yards, seven touchdowns and 12 interceptions.