The playoffs begin tonight for Class 3A and 4A boys basketball teams with Substate Quarterfinals. Here is a look at area match-ups will all games set for 7:00 p.m. tipoffs.

CLASS 3A

Substate 1
Sioux Center @ Carroll
MOC-Floyd Valley @ Storm Lake
Bishop Heelan @ LeMars
Denison-Schleswig @ Sergeant Bluff-Luton

Substate 8
Perry @ Dallas Center-Grimes
Harlan @ ADM
Clarke @ Glenwood
Creston @ Atlantic – ON KJAN

CLASS 4A

Substate 1
CB Thomas Jefferson @ Sioux City West
Sioux City North @ Sioux CIty East

Substate 7
Lewis Central @ Urbandale
Des Moines East @ Des Moines North