Borah last beat Rocky Mountain in 2012, which also coincides with the last time the Lions made the playoffs.
Rocky Mountain heads into the 7 p.m. matchup at Dona Larsen Park leading the all-time series against Borah 4-3.
Although the Grizzlies (5-1, 2-0) are the favorite and stand alone in first place in the 5A Southern Idaho Conference Pod A standings, Borah (4-2, 1-1) has already pulled off one upset victory this season.
The Lions beat Capital 49-42 last week to end the Eagles’ 37-game winning streak against Boise School District opponents dating back to 2003. It was Borah’s first win over Capital since 2000.
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Meridian (2-4, 1-1) is tied for third in the 5A SIC Pod B standings with Vallivue, and needs a win to stay in the hunt for the final playoff spot. Columbia was shutout for the second time this season, extending its losing streak to 20 games.