No team in NBA history has gone undefeated in their division. The Boston Celtics in 08-09 went 15-1 in their division, as did the Miami Heat in 03-04. In 1949-50 the Syracuse Nationals also went 15-1 in their division.
No AFL team ever went undefeated. The 1972 Miami Dolphins are the only NFL team to have ever gone undefeated.
no team has ever gone undefeated
most recently, this year 2010, the Oakland Raiders went undefeated in the AFC west, finished 8-8, third in that division
The only Division 1 team that went undefeated was Utah (13-0).
The Panthers have gone undefeated in the preseason in three of the last four years.
No. In fact one season, they only won one game!
Not to my information
Yes. The only team in the NFL to ever go undefeated and untied in division play without making the playoffs was the 2010 Oakland Raiders, who finished the year third in the AFC West division (and out of the playoffs) at 8-8-0, despite going 6-0-0 in division play.
no it has never happened
The MLB team that has gone undefeated in the playoffs were the 1976 Cincinatti Reds swept the Phillies 3-0 in the NLCS and then swept the Yankees 4-0.