Mandan will face West Fargo, the East’s top seed, on June 1 at Mandan Memorial Ballpark in the first round of the Class A State Baseball Tournament.
The Braves come into the state playoffs with a 20-15 record overall.
Mandan enters the tournament winners of six of their last seven games.
The Braves seek the school’s fourth state title in baseball, and first since 2015.
First pitch for the game is scheduled for 7 p.m.