Kampfer, 33, spent the 2021-22 season with Ak Bars Kazan in the Kontinental Hockey League, recording 30 points (11-19-30), 49 penalty minutes and a plus-seven rating in 46 appearances, in addition to four points (2-2-4) in six postseason games. The 5-foot-11, 198-pound defenseman has skated in 231 NHL games with the Boston Bruins, Minnesota Wild, Florida Panthers, New York Rangers and Boston Bruins, compiling 39 points (15-24-39) and 110 penalty minutes. Originally selected by the Anaheim Ducks in the fourth round (93rd overall) of the 2007 NHL Entry Draft, Kampfer was a Black Ace on Boston's Stanley Cup-winning team in 2011 as a first-year professional. He has also appeared in 271 American Hockey League games between the Providence Bruins, Houston Aeros, Iowa Wild, San Antonio Rampage, Hartford Wolf Pack and Providence Bruins, totaling 119 points (31-88-119) and 211 penalty minutes.
A native of Ann Arbor, Mich., Kampfer played four seasons at the University of Michigan from 2006-10 prior to turning pro, amassing 60 points (7-53-60), 134 penalty minutes and a plus-65 rating in 147 contests. Kampfer was named to the NCAA Midwest All-Regional Team as a senior and helped the program win Central Collegiate Hockey Association tournament championships in 2008 and 2010. A product of the Little Caesars AAA Hockey Club, Kampfer joined the Wolverines after playing two seasons with the Sioux City Musketeers of the United States Hockey League from 2004-06, where he logged 35 points (12-23-35) and 190 penalty minutes in 103 contests. On the international stage, Kampfer served as an alternate captain for the United States at the 2022 Winter Olympics, notching four points (1-3-4), two penalty minutes and a plus-four rating in four games. He also earned a bronze medal as an alternate captain for Team USA's Under-19 team at the 2006 Viking Cup, served as an alternate captain for Team USA's Under-18 Select Team in 2005 and captured a silver medal when he captained Team USA's Under-17 Select Team in 2004.
