| September |
| * | 2 | 5:00PM | Onaga | @ | Hanover | 25-20,24-26,25-11 | |
| | Hanover Triangular: Onaga won 25-20, 24-26, 25-11 | |
| * | | 5:00PM | Washington County | vs. | Onaga | 19-25,19-25 | |
| | Hanover Triangular: Onaga won 25-19, 25-19 | |
| | 4 | 5:00PM | Wetmore | vs. | Onaga | 13-25,13-25 | |
| | Jackson Heights Triangular: Onaga won 25-13, 25-13 | |
| | | 5:00PM | Onaga | @ | Jackson Heights High School | 25-17,25-22 | |
| | Jackson Heights Triangular: Onaga won 25-17, 25-22 | |
| * | 9 | 5:00PM | Onaga | vs. | B&B | 25-20,21-25,25-21 | |
| | Wetmore Triangular: Onaga won 25-20, 21-25, 25-21 | |
| * | | 5:00PM | Onaga | @ | Wetmore | 25-13,25-21 | |
| | Wetmore Triangular: Onaga won 25-13, 25-21 | |
| | 13 | | Frankfort | vs. | Onaga | 19-25,25-22,21-25 | |
| | St. Xavier Invitational Final: Onaga won 25-19, 22-25, 25-21 | |
| | | | Burlingame High School | vs. | Onaga | 19-25,14-25 | |
| | St. Xavier Invitational: Onaga won 25-19, 25-14 | |
| | | | Wetmore | vs. | Onaga | 17-25,17-25 | |
| | St. Xavier Invitational: Onaga won 25-17, 25-17 | |
| | | | Kickapoo Nation | vs. | Onaga | 8-25,9-25 | |
| | St. Xavier Invitational: Onaga won 25-8, 25-9 | |
| | | | Onaga | vs. | St. Xavier High School | 25-9,25-13 | |
| | St. Xavier Invitational-Onaga won 25-9, 25-13 | |
| | | 8:30AM | Frankfort | @ | Onaga | 25-23,23-25,25-27 | |
| | St. Xavier Invitational: Onaga won 23-25, 25-23, 27-25 | |
| * | 16 | 5:00PM | Bern | @ | Onaga | 12-25,25-19,16-25 | |
| | Onaga Quad: Onaga won 25-12, 19-25, 25-16 | |
| * | | 5:00PM | Centralia | @ | Onaga | 25-12,25-16 | |
| | Onaga Quad: Cent won 25-12, 25-16 | |
| | | 5:00PM | Wetmore | @ | Onaga | 16-25,19-25 | |
| | Onaga Quad: Onaga won 25-16, 25-19 | |
| * | 23 | 5:00PM | Onaga | @ | Axtell | 23-25,25-10,25-23 | |
| | Axtell Triangular: Onaga won 23-25, 25-10, 25-23 | |
| * | | 5:00PM | Onaga | vs. | Clifton-Clyde | 20-25,25-20,25-10 | |
| | Axtell Triangular: Onaga won 20-25, 25-20, 25-10 | |
| | 30 | 5:00PM | Onaga | @ | Clifton-Clyde | 25-14,25-17 | |
| | Clifton-Clyde Triangular: Onaga won 25-14, 25-17 | |
| * | | 5:00PM | Linn | vs. | Onaga | 25-17,25-21 | |
| | Clifton-Clyde Triangular: Linn won 25-17, 25-21 | |
| October |
| | 4 | | Wetmore | vs. | Onaga | 21-25,7-25 | |
| | Onaga Invitational: Onaga won 25-21, 25-7 | |
| | | | Wabaunsee High School | vs. | Onaga | 21-25,23-25 | |
| | Onaga Invitational: Onaga won 25-21, 25-23 | |
| | | | Mission Valley High School | vs. | Onaga | 6-25,14-25 | |
| | Onaga Invitational: Onaga won 25-6, 25-14 | |
| | | 8:00AM | Frankfort | @ | Onaga | 25-22,25-14 | |
| | Onaga Invitational: FFort won 25-22, 25-14 | |
| | | 8:00AM | Onaga | @ | Blue Valley | 25-12,27-25 | |
| | Onaga Invitational: Onaga won 25-12, 27-25 | |
| | 7 | 5:00PM | Axtell | @ | Onaga | 15-25,13-25 | |
| | Onaga Quad: Onaga won 25-15, 25-13 | |
| * | | 5:00PM | Blue Valley | @ | Onaga | 11-25,11-25 | |
| | Onaga Quad: Onaga 25-11, 25-11 | |
| * | | 5:00PM | Valley Heights | @ | Onaga | 22-25,25-20,25-21 | |
| | Onaga Quad: VHTS 22-25, 25-20, 25-21 | |
| * | 14 | 5:00PM | Onaga | @ | Frankfort | 15-25,25-17,25-18 | |
| | Frankfort Triangular: Onaga won 15-25, 25-17, 25-18 | |
| | | 5:00PM | Linn | vs. | Onaga | 25-22,25-21 | |
| | Frankfort Triangular: Linn won 25-22, 25-21 | |
| | 18 | | Onaga | vs. | B&B | 22-25,14-25 | |
| | TVL @ B&B: B&B won 25-22, 25-14 | |
| | | | Onaga | vs. | Centralia | 9-25,13-25 | |
| | TVL @ B&B: Cent won 25-9, 25-13 | |
| | | 9:00AM | Washington County | @ | Onaga | 25-17,25-21 | |
| | TVL @ B&B: WC won 25-17, 25-21 | |
| | 25 | | Jackson Heights High School | vs. | Onaga | 20-25,21-25 | |
| | 2A Sub-State at Seneca Semi: Onaga won 25-20, 25-21 | |
| | | | Nemaha Valley | vs. | Onaga | 25-23,19-25,25-16 | |
| | 2A Sub-State at Seneca Final: NV won 25-23, 19-25, 25-16 | |
| | | 2:00PM | Onaga | vs. | Wathena High School | 25-6,25-8 | |
| | 2A Sub-State 1st Rd at Seneca: Onaga won 25-6, 25-8 | |
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