Bela Karolyi, one of the United States’ most eminent gymnastics coaches alongside wife Márta, has died at age 82, a spokesperson for USA Gymnastics said Saturday evening.

Jill Geer, a spokesperson for the organization, the nation’s governing body for the sport, confirmed Karolyi died Friday. A cause of death was not provided.

Bela Karolyi helped build USA Gymnastics into an Olympics and international competition powerhouse starting in the 1980s and extending through the 2010s, when his wife…