Idol Alums Ruben Studdard and Clay Aiken Did Their First TV Duet in 13 YearsIdol Alums Ruben Studdard and Clay Aiken Did Their First TV Duet in 13 YearsIt's been over 13 years since RUBEN STUDDARD battled it out on "American Idol" against CLAY AIKEN (Ruben won the second season). Chad TaylorChad Taylor