A stifling defense that clamped down on the Lady Eagles was the key to the win for the Lady Bobcats.
McNairy (22-6) will now host Obion County in the first round of the Region Tournament on Friday. Tip is at 7 p.m. If the Lady 'Cats win on Friday, they will return to Chester Co. to play in the semifinals.
The Lady 'Cats held the Lady Eagles to only 15 points in the second half and just four points in the fourth quarter to keep Chester Co. from making a comeback.
Haven Phelps hit three three-pointers in the first half to help MC open a 26-20 halftime lead. Sophomore Madi Rose Hammock hit a clutch three in the final seconds of the first half to give the blue and gold some momentum going into halftime.
McNairy hit five treys in the first half to account for 15 of its 26 points.
The district championship was the eighth under Coach Jerry Lott and the team's 12th in school history. It was their first district crown since 2011.
Phelps topped MC in scoring with 15 points followed by Porsha Chappell and Kaitlyn West with 10 points apiece.
Leading scorer and district MVP Mallorie Sweat was held scoreless.
Sweat, Chappell, Phelps and Kaitlyn West were named to the All-District team for their play during the season. Selika McCord, Margie Coleman and Chappell were named to the All-Tournament team.
Sweat and Chappell were named to the all-academic (3.3 GPA or higher) team.