Crystal Bowersox with Brian Walker at South By Southwest 2011In sad "American Idol" news, Season 9 runner-up Crystal Bowersox has revealed, via People magazine, that she is splitting from her husband, fellow folk-rock musician Brian Walker.

"After two and a half years, we have decided to end our marriage," the couple told People in a statement Monday. "The friendship and love which brought us together remains strong, and we will continue to support each other in our careers and personal lives. We are hopeful that people will be respectful of our privacy as we face this emotional and challenging time for our family."

Reigning "American Idol" champ Phillip Phillips, who has a long and well-documented history of kidney stone problems, has postponed the remainder of his college tour due to illness.

This news was first revealed in a Sunday press release issued by the University of Wisconsin, Eau Claire; the Season 11 winner was set to perform with special guest Gin Wigmore on the campus tonight (Monday, May 6). But that concert and eight others--including a show in Dublin, Ireland--have been scrapped for now.

"Hey guys, due to doctor's orders I have to reschedule my last tour dates," Phillip tweeted on Monday morning, confirming the university's report."They will be rescheduled! Looking forward to seeing you on Mayer!"

Last night on "American Idol," Amber Holcomb went home in fourth place. This was not a huge surprise, but today, my "The Day After" co-host Matt Whitfield and I still have much to discuss: the welcome return of David Cook and Constantine Maroulis, the less-welcome return of will.i.am, the rumors of Harry Connick Jr. possibly joining the "Idol" judging panel, and what's next for the finale three girls. Enjoy the "Idol" chatter!