Johnson’s professional career began in 2005 when he was selected with the third overall pick of the 2005 NHL Draft by the Carolina Hurricanes, behind Sidney Crosby and Bobby Ryan. Just over a year after being drafted, the Hurricanes traded Johnson and Oleg Tverdovsky to the Los Angeles Kings in exchange for Tim Gleason and Éric Bélanger.
Before joining the Kings at the end of the 2006-07 season, Johnson played two years at the University of Michigan in the NCAA, where he scored 26 goals and amassed 71 points in 74 games.
Los Angeles quickly rewarded Johnson for his breakout, signing the young blue liner to a seven-year, $30.5MM extension in early January of 2010. Unfortunately, his tenure with the Kings wouldn’t last much longer.
Looking to add a top-six center, the Kings traded Johnson, along with a 2013 first-round pick, to the Columbus Blue Jackets for Jeff Carter. Carter played a crucial role in the Kings’ first Stanley Cup championship later that year, while Johnson experienced the best years of his career with Columbus.