The only real surprise was a recall for veteran goalkeeper Yoshikatsu Kawaguchi, who has recovered from a serious leg injury in time to make his fourth World Cup squad.
"Kawaguchi brings experience as an ex-captain and his presence and leadership will be a boost," said Okada.
Squad: Goalkeepers: Seigo Narazaki (Nagoya Grampus), Eiji Kawashima (Kawasaki Frontale), Yoshikatsu Kawaguchi (Jubilo Iwata).
Defenders: Yuji Nakazawa (Yokohama F-Marinos), Tulio (Nagoya Grampus), Yasuyuki Konno (FC Tokyo), Daiki Iwamasa (Kashima Antlers), Yuichi Komano (Jubilo Iwata), Yuto Nagatomo (FC Tokyo), Atsuto Uchida (Kashima Antlers).
Midfielders: Shunsuke Nakamura (Yokohama F-Marinos), Yasuhito Endo (Gamba Osaka), Kengo Nakamura (Kawasaki Frontale), Junichi Inamoto (Kawasaki Frontale), Yuki Abe (Urawa Reds), Makoto Hasebe (VfL Wolfsburg), Keisuke Honda (CSKA Moscow), Daisuke Matsui (Grenoble).
Forwards: Shinji Okazaki (Shimizu S-Pulse), Keiji Tamada (Nagoya Grampus), Yoshito Okubo (Vissel Kobe), Takayuki Morimoto (Catania), Kisho Yano (Albirex Niigata).
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