RKS came from behind to edge rivals Queen Victoria School 28-26, while Marist Brothers defeated Lelean 16-3.
In other results this morning, QVS defeated MGM High 22-15, and Ratu Navula edged RKS 26-25 in the U15 semi finals.
The U18 semifinals will see Suva Grammar taking on Ra High School at 3pm at Churchill Park, and Lelean Memorial School will meet Nasinu Secondary School at 3.40pm at HFC Bank Stadium.
