[3] After making the opening night roster for the Wild to start the 2009–10 season,[4] Sifers played the majority of the year with AHL affiliate, the Houston Aeros.

[5] After three seasons in Germany, Sifers opted to return to North America, signing a one-year deal as a free agent with the Springfield Falcons of the AHL on July 3, 2014.

[6] Playing with the affiliate of the Columbus Blue Jackets, Sifers appeared in every game for the Falcons on the blueline, contributing with 22 points in the 2014–15 season.

He agreed to continue his career in the AHL, signing a two-year deal with the Utica Comets, an affiliate to the Vancouver Canucks, on July 13, 2017.

[8] Upon the conclusion of his contract with the Comets at the end of the 2018-19 regular season, Sifers opted to conclude his 13 year professional career, announcing his retirement on April 15, 2019.