Burke Barnes of Lake Stevens, Wash., the champion at 121 pounds, was named Outstanding Wrestler at the 2000 AdvoCare Cadet National Greco-Roman Championships at Fargo, N.D., July 24.    Barnes, a 1999 Cadet National freestyle runner-up, scored an impressive 12-2 technical fall over Eric Tannenbaum of Naperville, Ill., in 3:09.    There were no 1999 Cadet National Greco-Roman champions who were able to return to the championship row.  However, 1999 Cadet National freestyle champion Tim Kephart of St. Louis, Mo., claimed the 123-pound title. He pinned Derek Moore of Redding, Calif. in 57 seconds. It was the third career Cadet National silver medal for Moore, who won a silver medal in both styles at the 1999 Cadet Nationals.    At 167 pounds, Roger Kish of Lapeer, Mich. defeated J.D. Bergman of Oak Harbor, Ohio, 3-0.   Kish won his third career Cadet National medal. He was a 1999 Cadet National Greco-Roman runner-up and placed third in freestyle.    In a battle of past Cadet All-Americans at 132 pounds, Chase Metcalf of Davison, Mich. beat C.P. Schlatter of Westerville, Ohio, 5-2. Metcalf was fourth in the 1999 Cadet Greco-Roman Nationals. Schlatter was a 1999 Cadet National runner-up and freestyle champion. Schlatter avenged his loss in last year's Greco-Roman finals by defeating Zach Lamano of Layton, Utah in the pool finals, 4-1.    At 83.5 pounds, Mat Gardner of Springfield, Ore. won by tech. fall over Tony Valdez of Omaha, Neb., 13-3 in 2:54. Gardner was eighth in 1999 Cadet Nationals in Greco-Roman.    At 88 pounds, Gabriel Mooney of Greenbush, Minn. beat Mike Compton of Willard, Ohio, 5-0.    At 94.5 pounds, Kevin Hunter of Orem, Utah used a series of exciting exposures to score technical fall over Drew Headlee of Waynesburg, Pa., 13-0, in 4:00.    At 112 pounds, A.J. Lavender of Moline, Ill. opened strongly and defeated Steve Anceravage of Bloomsburg, Pa., 6-2.    Nathan Galloway of Boalsburg, Pa. defeated Mitch Kuhlman of Medford, Minn., 11-2 in the finals at 143 pounds. Galloway was seventh in 1999 Cadet Nationals in freestyle.    At 154 pounds, Daniel Bedoy of Whiting, Ind. defeated Casey Streeter of Davison, Mich., 5-0. Streeter was sixth in 1999 Cadet Nationals in freestyle     In an exciting match at 182.5 pounds, Matt Baumann of Edgar, Wis. edged Jared Massey of Blaine, Minn., 4-3.     Grant Miller of Roscoe, Ill. was dominant in the finals at 209 pounds, defeating James Hollis of Turlock, Calif., 8-0. Miller was eighth in the 1999 Cadet Greco-Roman Nationals.    In an all-Ohio final at 242 pounds, Patrick Barrentine of West Carrolton, Ohio, controlled the entire match to defeat Derrick Bendau of Mayfield Village, Ohio, 8-2.    The Most Falls Award went to Alonzo Martinez of Nebraska at 143 pounds, with eight falls in 7:52.