Harbaugh has the second-ranked and unbeaten Wolverines positioned for a second straight appearance in the College Football Playoff following last week’s win at No. 5 Ohio State. Michigan plays Purdue in the conference championship game Saturday in Indianapolis.
Campbell was second in the Big Ten with 118 tackles and intercepted two passes as the anchor of an Iowa defense that allowed 14.4 points and 277.9 yards per game to rank among the national leaders. Campbell was the league’s leading tackler in 2021.
The All-Big Ten first team defense, as selected by coaches: linemen, Jer’Zhan Newton, Illinois; Mike Morris, Michigan; Mazi Smith, Michigan; JT Tuimoloau, Ohio State; linebacker, Campbell, Iowa; Nick Herbig, Wisconsin; Tommy Eichenberg, Ohio State; secondary, Sydney Brown, Illinois; Devon Witherspoon, Illinois; Riley Moss, Iowa; Joey Porter Jr., Penn State.
Special teams: kicker, Jake Moody, Michigan; punter, Bryce Baringer, Michigan State; return specialist, Jaylin Lucas, Indiana.
The conference will announce its All-Big Ten offense on Wednesday.
The Associated Press All-Big Ten team and individual honors will be announced Dec. 7.