The Warren County High School boys tennis team has grown accustomed to winning district titles, but the Pioneers didn’t take anything for granted this week in the individual District 6-AAA tournament.Seniors Seth Grissom and Thomas Locke paired to win the doubles tournament, dispatching three teams on their way to the championship.Grissom and Locke entered the tournament as the No. 2 seed, but made quick work of a duo from Cookeville Monday.In the first day of action, Grissom and Locke won 6-2 and 6-4 to advance to the semifinals. In the semifinals, the Pioneer seniors faced Jonathan Griffin and Caleb Winton from White County.Once again, the Pioneers won in straight sets.