In the quarterfinal of the 1998 Summer Koshien, Matsuzaka threw 250 pitches in 17 innings in a win over PL Gakuen. (The previous day he had thrown a 148-pitch complete game shutout.) The next day, despite trailing 6–0 in the top of the eighth inning, the team miraculously won the game after scoring 7 runs in the final two innings (four in the eighth and three in the ninth). He started the game in left field, but came in as a reliever in the ninth inning to record the win in 15 pitches. In the final, he threw a no-hitter, the second ever in a final. This performance garnered him the attention of many scouts.