山本由伸投手がオープン戦（Cactus League）で，2回を1安打無失点，3三振と好投して，鮮烈なデビューを飾りました。
MLBの公式サイトはarsenalという言葉で（"STORE, REPERTOIRE" ウェブスター；「〈米俗〉《野球》〔投手の〕持ち球」アルク英辞郎），この"新人投手"のピッチングを形容していました。これは野球人にはおなじみの表現ではありますが...。
オープン戦が行われたのはSurprise球場でしたが，決してsurpriseではない結果でした。（UG）
Yamamoto near perfect in stellar spring debut
SURPRISE, Ariz. -- On Tuesday, the Dodgers finally got a chance to enjoy the first part of their billion dollar plan as Shohei Ohtani exceeded the hype of his first game with them by launching a two-run homer in his last at-bat of the game.
A day later, it was Yoshinobu Yamamoto’s turn to show he’s worth the anticipation and hype that comes with being the most expensive pitcher in the history of the game. Though it was just a Spring Training outing, Yamamoto showed glimpses of exactly why he was one of the most sought after free agents ever.
In his first Cactus League start Wednesday against the Rangers at Surprise Stadium, the Japanese phenom tossed two scoreless innings, striking out three and allowing just one hit in what ended up being the Dodgers’ first loss of the spring, a 6-4 defeat. Yamamoto threw 19 pitches, 16 for strikes, displaying his wide arsenal of pitches.
https://www.mlb.com/news/yoshinobu-yamamoto-makes-dodgers-spring-debut
