Striker Shuto Machino has replaced injured Yuta Nakayama in Japan's squad for the World Cup this month, its football association said on Tuesday.
The 23-year-old's call-up is not a like-for-like swap because Nakayama is a full-back.
"Off I go!" Shonan Bellmare forward Machino, who has scored three times in four appearances for Japan, tweeted.
Nakayama was named in the original 26-man squad for Qatar and had been expected to play in Group E games against Germany, Costa Rica and Spain.
But last week he sustained an Achilles' tendon injury while playing for English side Huddersfield Town.
Huddersfield said the 25-year-old would require surgery that will rule him out for the rest of the Championship season.
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Japan launch their World Cup campaign against Germany on November 23, before taking on Costa Rica on November 27 and Spain on December 1.