Byrnes won its first state championship in boys basketball since 1990, defeating Irmo, 57-50, Friday night at Colonial Life Arena in Columbia.
The Rebels finish their season 25-4.
Heyden Brown led the way with 25 points for Byrnes, which built a seven-point halftime lead.
Head coach Layne Fowler was a senior guard on the last Byrnes team that played for a state championship in 1993.
Saturday, Christ Church’s girls face Timmonsville for the 1A state title and the Abbeville boys meet Timberland in 2A.