American Idol (season 9) spots of the season. Viewership for the Tuesday episodes averaged 22.974 million, while the Wednesday episodes averaged 21.951 million. American Idol (season 9) The ninth season of "American Idol" premiered on January 12, 2010 and concluded on May 26, 2010 on Fox. Simon Cowell, Randy Jackson and Kara DioGuardi returned to the judging panel. Ellen DeGeneres joined the panel as a replacement for Paula Abdul after guest judges filled in during the auditions. Idol Gives Back also returned for the season and was held on April 21, 2010, during the top seven results show. The top 24 semi-finals format used
American Idol (season 13) night before with all three judges on hand to toast the forthcoming announcement. On September 3, 2013, Lopez and Connick Jr. were officially announced as judges for this season along with the confirmation of Jackson being the new mentor. Lopez is the first "American Idol" judge to return after leaving at the end of the eleventh season. It was also later reported that Idol alumni Adam Lambert and Chris Daughtry would be assisting Jackson in mentoring the contestants. In a rules change from past seasons, semifinalists from the twelfth season (but not previous seasons) who were not in the top