Southpaw Masaki Onishi threw a one-hit shutout with 12 strikeouts, leading Kobe Kokusaidai Fuzoku to a 4-0 victory over tourney favorites Komadai Tomakomai in the second round of the national high school invitational baseball tournament Tuesday.

Shohei Masaki drove in all four runs with a two-run double in the third inning and a two-run single in the fourth at Koshien Stadium as the local school reached the quarterfinals of the spring tournament for the first time.

Komadai Tomakomai from Hokkaido failed in its bid to become only the fifth school to win both summer and spring titles.

In first-round action, Sho Ito hit a two-run double in the first inning in support of lefty Kohei Tajima, who scattered 11 hits in a complete-game effort as Wakayama Shogyo, making its first tournament appearance in 38 years, edged out Joso Gakuin of Ibaraki Prefecture 6-5.

In another first-round game, Ryo Tennojiya delivered a two-run double to open the scoring in the fourth inning and Kamimura Gakuen tacked on two runs in the sixth en route to a 5-3 victory over Seiryo of Ishikawa Prefecture, giving the second-year team from Kagoshima Prefecture its first win in its debut at the spring tournament.

In Tuesday's other second-round game, Yasuhiro Takao hit a seventh-inning tiebreaking RBI single and Nobuaki Nakabayashi pitched four-hit ball in his second straight complete-game effort as Keio of Kanagawa Prefecure downed Fukui Shogyo 3-1.