The first night of War of the Worlds 2017 was a supershow co-produced by New Japan Pro-Wrestling (NJPW) and Ring of Honor (ROH) that took place on May 7, 2017, at the Ted Reeve Community Arena in Toronto, Ontario, Canada, and was headlined by a Six Man Tag Team Match pitting Hiroshi Tanahashi & The Addiction (Christopher Daniels & Frankie Kazarian) against BULLET CLUB (Kenny Omega, Matt Jackson & Nick Jackson).