Three changes for Japan. The least surprising news is that Michael Leitch starts after an inspirational display off the bench against Ireland. Leitch, Atsushi Sakate, and Wimpie van der Walt come in for Amanaki Mafi, Shota Horie and Luke Thompson. Keep an eye out for nippy winger Kotaro Matsushima, who scored a hat-trick in the opening win against Russia.
Samoa make six changes after their defeat by Scotland last Monday. Fly-half Ulupano Seuteni, loose-head prop Jordan Lay, second-row Piula Faasalele, hooker Seilala Lam and Ah See Tuala all make their first starts at this Rugby World Cup.
Japan: Yamanaka, Matsushima, Lafaele, Nakamura, Lemeki, Tamura, Nagare, Inagaki, Sakate, Koo, van der Walt, Moore, Leitch, Labuschagne (capt.), Himeno. Replacements: Horie, Nakajima, Ai Valu, Helu, Tui, Tanaka, Matsuda, Fukuoka.
Samoa: Nanai-Williams, Tuala, Leiua, Taefu, Fidow, Seuteni, Polataivao, J. Lay, S. Lam, Alaalatoa, Faasalele, Leaupepe, Vui, Ioane, J. Lam (capt.). Replacements: Niuia, Alo-Emile, J. Lay, Toleafoa, Tyrell, Cowley, Pisi, Fonotia.