By P.J. Hernandez Advance News JournalTres Barrera, a Sharyland alum and former MLB player, is continuing his trek in the sport as Lamar University's baseball team announced Tuesday that he will be part of the staff. Barrera will serve as the squad's hitting coach — a team that operates within the Southland Conference, which is the same division in which UTRGV plays in.The former UT Longhorn recently announced his retirement from the big leagues via social media Barreraon June 22. In those X and Instragram posts, he said that he wanted to walk away from the game as a player ...