Donald Jacob Hager Jr. (born March 24, 1982) is an American professional wrestler and mixed martial artist, currently signed to All Elite Wrestling (AEW) under the ring name Jake Hager, where he is a member of the Jericho Appreciation Society stable. Hager is also known for his time in WWE under the ring name Jack Swagger, where he was a former world champion. As a mixed martial artist, he is currently signed to Bellator MMA where he competes in the heavyweight division.