Ireland are the top seeds in the pool, with Scotland and Japan the other automatic qualifiers. European qualifiers Russia and play-off winners Samoa complete the group.
The opening game in the pool gets the tournament underway when Japan face Russia at Tokyo Stadium on 20 September.
|MATCH NO||DATE||TEAMS||KICKOFF TIME||VENUE|
|1||Friday, Sept 20||Japan vs Russia||19:45||Tokyo Stadium|
|6||Sunday, Sept 22||Ireland vs Scotland||16:45||International Stadium Yokohama|
|9||Tuesday, Sept 24||Russia vs Samoa||19:15||Kumagaya Rugby Stadium|
|14||Saturday, Sept 28||Japan vs Ireland||16:15||Shizuoka Stadium Ecopa|
|18||Monday, Sept 30||Scotland vs Samoa||19:15||Kobe Misaki Stadium|
|22||Thursday, Oct 3||Ireland vs Russia||19:15||Kobe Misaki Stadium|
|26||Saturday, Oct 5||Japan vs Samoa||19:30||City of Toyota Stadium|
|31||Wednesday, Oct 9||Scotland vs Russia||16:15||Shizuoka Stadium Ecopa|
|36||Saturday, Oct 12||Ireland vs Samoa||19:45||Fukuoka Hakatanomori Stadium|
|40||Sunday, Oct 13||Japan vs Scotland||19:45||International Stadium Yokohama|