The eighteenth night of G1 Climax 33, featuring two semifinal matches, took place at Ryogoku Kokugikan in Sumida, Tokyo, Japan on August 12, 2023
Tetsuya Naito
William Ospreay
Will Ospreay
Kazuchika Okada
Takaaki Watanabe
EVIL
Hiroyoshi Yamamoto
Hiroyoshi Tenzan
Hirai Kawato
Master Wato
Yōhei Hayata
HAYATA
Kaito Kiyomiya
Shota Umino
Tomoaki Honma
Minoru Suzuki
Ren Narita
Hirooki Goto
Toru Yano
Yōhei Komatsu
YOH
Nobuo Yoshihashi
YOSHI-HASHI
Togi Makabe
Alex Coughlin
Steven Owens
Chase Owens
David Stephen Finlay III
David Finlay
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