Wynonna has postponed a series of concerts after her husband Michael Scott "Cactus" Moser, 55, was seriously injured in a motorcycle accident late Saturday (Aug. 18) near Hill City, S.D. Moser, who scored four No. 1 country hits in the '80s, as a member of the band Highway 101, plays drums in his wife's band. The couple were riding their Harley-Davidson motorcycles prior to Saturday's scheduled concert at the Deadwood Mountain Grand Hotel and Casino in Deadwood, S.D., when Moser drifted across the center line of the highway and collided with the driver's side door of a Chevrolet Malibu. Wynonna, who was riding ahead of Moser, was not involved in the accident. Moser was transported to an area hospital and is being treated for serious but non-life threatening injuries. Saturday's concert was postponed, as well as four other dates scheduled later this week in Canada. "The outpouring of prayer and support from friends, family and fans has been a blessing," she said in a written statement. "Cactus is a champion. I love him deeply, and I will not leave his side." Judd and Moser were married on June 10 at her farm near Nashville.