Schedule:
Please note: All rankings shown are the rankings of the teams on the date that they played one another
| Game | Date | Away Team (Rank) | Away Score | Home Score | Home Team (Rank) | Game Status | Result | Margin |
|---|---|---|---|---|---|---|---|---|
| 1 | 2018-11-11 | Nicholls State (177) | 72 | 89 | Washington State (160) | Final | W | 17 |
| 2 | 2018-11-14 | Washington State (108) | 69 | 78 | Seattle (194) | Final | L | -9 |
| 3 | 2018-11-19 | Cal Poly (261) | 70 | 84 | Washington State (108) | Final | W | 14 |
| 4 | 2018-11-24 | Delaware State (348) | 52 | 80 | Washington State (204) | Final | W | 28 |
| 5 | 2018-11-27 | Cal State-Northridge (260) | 94 | 103 | Washington State (130) | Final | W | 9 |
| 6 | 2018-12-01 | Washington State (130) | 63 | 69 | New Mexico State (122) | Final | L | -6 |
| 7 | 2018-12-05 | Idaho (316) | 70 | 90 | Washington State (153) | Final | W | 20 |
| 8 | 2018-12-09 | Montana State (315) | 95 | 90 | Washington State (153) | Final | L | -5 |
| 9 | 2018-12-17 | Rider (200) | 80 | 94 | Washington State (165) | Final | W | 14 |
| 10 | 2018-12-19 | SIU-Edwardsville (330) | 73 | 89 | Washington State (177) | Final | W | 16 |
| 11 | 2018-12-22 | San Diego (66) | 82 | 75 | Washington State (177) | Final | L | -7 |
| 12 | 2018-12-23 | New Mexico State (207) | 75 | 72 | Washington State (179) | Final | L | -3 |
| 13 | 2018-12-29 | Santa Clara (210) | 79 | 71 | Washington State (167) | Final | L | -8 |
| 14 | 2019-01-05 | Washington State (182) | 67 | 85 | Washington (53) | Final | L | -18 |
| 15 | 2019-01-10 | Washington State (191) | 60 | 92 | Colorado (111) | Final | L | -32 |
| 16 | 2019-01-12 | Washington State (191) | 70 | 88 | Utah (130) | Final | L | -18 |
| 17 | 2019-01-17 | California (204) | 59 | 82 | Washington State (207) | Final | W | 23 |
| 18 | 2019-01-19 | Stanford (130) | 78 | 66 | Washington State (207) | Final | L | -12 |
| 19 | 2019-01-24 | Washington State (204) | 77 | 90 | Oregon State (80) | Final | L | -13 |
| 20 | 2019-01-27 | Washington State (204) | 58 | 78 | Oregon (74) | Final | L | -20 |
| 21 | 2019-01-30 | UCLA (75) | 87 | 67 | Washington State (222) | Final | L | -20 |
| 22 | 2019-02-02 | USC (78) | 93 | 84 | Washington State (222) | Final | L | -9 |
| 23 | 2019-02-07 | Washington State (226) | 91 | 70 | Arizona State (46) | Final | W | 21 |
| 24 | 2019-02-09 | Washington State (226) | 69 | 55 | Arizona (60) | Final | W | 14 |
| 25 | 2019-02-16 | Washington (31) | 72 | 70 | Washington State (190) | Final | L | -2 |
| 26 | 2019-02-20 | Colorado (82) | 74 | 76 | Washington State (191) | Final | W | 2 |
| 27 | 2019-02-23 | Utah (94) | 92 | 79 | Washington State (191) | Final | L | -13 |
| 28 | 2019-02-28 | Washington State (181) | 50 | 98 | Stanford (113) | Final | L | -48 |
| 29 | 2019-03-02 | Washington State (181) | 69 | 76 | California (265) | Final | L | -7 |
| 30 | 2019-03-06 | Oregon (72) | 72 | 61 | Washington State (198) | Final | L | -11 |
| 31 | 2019-03-09 | Oregon State (83) | 85 | 77 | Washington State (198) | Final | L | -8 |
| 32 | 2019-03-13 | Washington State (201) | 51 | 84 | Oregon (68) | Final | L | -33 |