Koryo right-fielder Akira Arimizu and left-fielder Takuma Yamashita combined for seven RBIs, leading the Hiroshima school to a 14-2 rout of Higashi Fukuoka in the second round of the National High School Championship on Thursday. Arimizu got Koryo on the board in the first inning with a run-scoring single and finished 3-for-3 with three RBIs. Yamashita went 3-for-6 and drove in four runs for the team that eliminated Hokkaido powerhouse Komadai Tomakomai from the tournament last Saturday. In other second-round action at Koshien Stadium, Takayuki Morita struck out 13 batters in a complete-game effort as Gifu's Ogaki Nichidai held off Tokyo's Soka 5-3. Left-fielder Ryohei Ogushi hit a tiebreaking two-run double in the sixth inning, leading Saga Kita past Mie's Ujiyamada Shogyo 9-1 in a replay of Tuesday's game that ended in a 4-4, 15-inning tie.