First-place Buffalo blanked the Rogers Royals 2-0 on Thursday evening in Buffalo.
Bison goals were scored by Emily Varner (power play) and Bekah Wright, while Hayley Morningstar stopped 26 Rogers shots.
The Bison are 7-0 in the Mississippi 8 and 7-13-1 overall.
Michelle Klimstra was in goal for Rogers (1-5 conference, 15-7 overall), making 24 saves.
Rogers will play at Cambridge-Isanti on Friday evening.