The District 6-AAA tournament is over and the Warren County High School boys basketball team is still left standing. Now a game with the Walker Valley Mustangs awaits.Saturday night in Cleveland, the Pioneers will play their second win-or-go-home game in the span of 10 days in the Region 3-AAA tournament. Warren County (13-20) won its way into the regional tournament by defeating Coffee County last Thursday 51-50 in the play-in game of the district tournament, one where the loser knew its season would be over.After the victory assured the Pioneers their third regional berth in four years under coach Malcolm Montgomery, the team had trouble improving its seeding for the regional tournament.