At New Prairie, Brittany Davis scored 14 points as Plymouth dominated Rochester 71-15 in the 3a Sectional semifinals.
The Pilgrims will meet Marian in the sectional finals. The Knights defeated John Glenn 54-40 in the New Prairie nightcap.
Plymouth and Marian will meet Saturday night at 7:30 at New Prairie.
In 3a's other local sectional, state runner-up Wawasee defeated Lakeland 46-33.
The Warriors will face Whitko in the Sectional finals. Whitko defeated Columbia City 44-42 in the other semifinal.
Wawasee and Whitko will battle Saturday night at 7:30 at Northwood.