After splitting two games during the regular season, the two teams will have a playoff rubber match at 4:30, with the winner moving on to Friday's winners' bracket final at Deer River.
Ely (17-8) is seeded second while Cook County is third. Deer River has the top seed and will take on either Marble or Brookston at 5:30 p.m. Tuesday, at Deer River. The tournament runs through Saturday.
Ely already has an automatic bid in the upcoming state tournament as the host, and is assured of its 10th state tournament berth in 15 years. One other Eighth District team will move on. If Ely wins the district title, the runner-up advances to state.
Post 248 has had an up-and-down July, including three wins in four tries in the Sir G's Midsummer Classic and a pair of losses to nemesis Deer River (12-3), which also knocked Ely off twice to win a section championship in high school baseball.
After four district games Tuesday, two at Cohasset and two at Deer River, the tournament resumes Friday with three games at Deer River. The title tilt is slated for 1 p.m. Saturday.