Jackson is seeded fifth for the Region 13C amateur baseball playoffs.
The Bulls will host fourth-seeded Hadley in Game One in a best-of-three series at 7:30 p.m. Wednesday at Wacker Field. Jackson opens the series at home because Laurie Mahon Field in Hadley does not have lights.
Game Two will be in Hadley at 2 p.m. Saturday and Game Three (if necessary) would be at 2 p.m. Sunday, also in Hadley.
The Bulls defeated the Buttermakers twice during the regular season, winning 2-1 in Jackson on June 1 and 16-6 in six innings in a scheduled seven-inning game June 19 at Hadley.
Both teams won their league crossover series in two straight games last week.
The Bulls defeated Worthington 9-0 (forfeit) and 10-3, while the Buttermakers won 8-2 and 26-1 over Mountain Lake.
Other series openers Wednesday have Ruthton at Milroy, Adrian at Luverne and Fairmont at Windom.
Winners of these series advance to the region semifinals and are guaranteed two more weeks of baseball. The semifinal winners will play in the championship series and the losers of the semifinals will play in the third-place series.
Three teams will qualify for the state Class C tournament at Dundas, Faribault and Miesville.
Region 13C Playoffs
Quarterfinal series
Hadley Buttermakers (4) vs. Jackson Bulls (5)
Game 1 – Wednesday at Jackson 7:30 p.m.
Game 2 – Saturday at Hadley, 2 p.m.
Game 3 - Sunday at Hadley, 2 p.m.
Milroy Irish (1) vs. Ruthton Royals (8)
Game 1 – Wednesday at Irish Yard, 7:30 p.m.
Game 2 - Friday at Ruthton, 7:30 p.m.
Game 3 - Sunday at Irish Yard, 2 p.m.
Luverne Redbirds (2) vs Adrian A's (7)
Game 1 – Wednesday at Luverne, 7:30 p.m.
Game 2 - Friday at Adrian, 7:30 p.m.
Game 3 - Sunday at Luverne, 4 p.m.
Windom Pirates (3) vs. Fairmont Martins (6)
Game 1 – Wednesday at Windom, 7:30 p.m.
Game 2 - Friday at Fairmont, 7:30 p.m.
Game 3 - Sunday at Windom, 2 p.m.
League crossover series
Jackson Bulls (2 First Nite) vs. Worthington Cubs (7 Gopher)
Jackson wins series 2-0
Game 1 – Jackson 9, Worthington 0 (forfeit)
Game 2 – Jackson 10, Worthington 3
Fairmont Martins (3 First Nite) vs. Pipestone A’s (6 Gopher)
Fairmont wins series 2-0
Game 1 – Fairmont 12, Pipestone 1
Game 2 – Fairmont 17, Pipestone 2
Fox Lake Foxes (4 First Nite) vs. Ruthton Royals (5 Gopher)
Ruthton wins series 2-1
Game 1 – Fox Lake 6, Ruthton 0
Game 2 – Ruthton 9, Fox Lake 8
Game 3 – Ruthton 15, Fox Lake 14
Lakefield Frogs (5 First Nite) vs. Adrian A’s (4 Gopher)
Adrian wins series 2-0
Game 1 – Adrian 2, Lakefield 0
Game 2 – Adrian 8, Lakefield 7
Mountain Lake Lakers (6 First Nite) vs. Hadley Buttermakers (3 Gopher)
Hadley wins series 2-0
Game 1 – Hadley 8, Mountain Lake 2
Game 2 – Hadley 26, Mountain Lake 1
Heron Lake Lakers (7 First Nite) vs. Luverne Redbirds (2 Gopher)
Luverne wins series 2-0
Game 1 – Luverne 13, Heron Lake 1
Game 2 – Luverne 5, Heron Lake 0