University of Oklahoma head assistant wrestling coach Barry Weldon has announced that he is leaving his position with the school to pursue a career in medical supply sales, effective immediately.    Weldon made the announcement in a Monday afternoon meeting with coaches and entire Sooners wrestling team.    "It was tough telling the guys today because you don't want them to feel like you are abandoning them. They were all very understanding and wished me the best," Weldon said of his emotional meeting with the team. "I've coached six years and enjoyed it. I love it and learned a great deal. I've just made a decision that I'm not going to be a coach for a career."    "The people at Oklahoma have been great during my time there. I couldn't ask for better athletes in this program or a better coaching staff to work with. I'll always be involved with wrestling to some extent - I just don't know in what capacity yet," Weldon added.    Oklahoma recently placed third at the NCAA Division I Wrestling Championships, crowning one national champion, 141-pound Teyon Ware.    Weldon completed his sixth season on the Sooners staff under head coach Jack Spates. Since joining the Sooner coaching staff, Weldon assisted in all aspects of coaching and helped coach five NCAA champions and 23 All-Americans as well as being part of two Big XII Conference team championships.    During his tenure, Oklahoma placed third at the NCAA Tournament three separate times (2002-03, 2005) and fourth twice (2000-01).    He joined the Oklahoma coaching staff after a short stint at Iowa State as the coach of the Cyclones' club team and administrative assistant for the wrestling program.    While wrestling at Iowa State, he compiled a 104-37 record and earned All-America honors twice. Weldon finished fifth at the NCAA Championships as a junior in 1996 and finished as the Big Eight runner-up while wrestling at 167 pounds. That same season Iowa State finished as NCAA runner-up. As a senior in 1997, Weldon compiled a 34-3 record and won the NCAA championship at 177 pounds.    Weldon captured three state titles while wrestling for Cherry Creek High School in Englewood, Colo. He also finished third in Oklahoma as a freshman while competing for Madill High School. He was rated as the nation's third best prep 171-pounder by Amateur Wrestling News. During his four-year high school career, Weldon compiled a record of 124-4 and helped Cherry Creek to a state title in 1991.