Figure skater Chris Knierim, 32, an Olympic gold medalist, to retire

COLORADO SPRINGS, Colo. -- Figure skater Chris Knierim, one-half of the husband-and-wife duo that helped the U.S. win team gold at the Pyeongchang Olympics, announced his retirement Wednesday, and Alexa Knierim said she will continue skating with a new partner.

The three-time national champions have withdrawn from next month's world championships. The Knierims will be replaced by Jessica Calalang and Brian Johnson on the American team headed to Montreal.

Chris Knierim, 32, said that his passion for skating had waned while injuries had mounted and said that forced him to consider his future. He also said he's been receiving treatment for depression.

Alexa Knierim, 28, did not say whom she was considering for a new partner, but her husband said he plans to be part of her coaching team going forward.