In 2014, the American Ring of Honor and Japanese New Japan Pro-Wrestling announced a partnership as part of which they held the first Global Wars show on May 10, 2014, in Toronto, Ontario, Canada. Global Wars, along with War of the Worlds, became an annual tradition. In 2015, the promotions held two Global Wars shows, both in Toronto. In 2016, Global Wars was held as a one-night pay-per-view in Chicago Ridge, Illinois. While all the previous Global Wars had taken place in May, in 2017, the event was moved to October and turned into a tour. Originally it was announced on July 14 as a three-show tour, taking place in Buffalo, New York; Pittsburgh, Pennsylvania and Columbus, Ohio, before a fourth show in Villa Park, Illinois was added on July 31. The first batch of wrestlers announced for the tour included Hiromu Takahashi, Killer Elite Squad, Kushida and Yoshi-Hashi from NJPW and The Briscoes, Bully Ray, Cody, Dalton Castle and the Boys, Jay Lethal and The Young Bucks from ROH. On July 31, ROH added NJPW wrestler Kenny Omega to the tour's final event in Villa Park, Illinois. Originally, the promotion announced that Omega would be defending the IWGP United States Heavyweight Championshipat the show, but later retracted the title match announcement. The Omega announcement led to the final show becoming the fastest selling event in ROH history with 1,875 tickets being sold the first day. On September 22, ROH announced that Omega would work all four of the Global Wars events. Three days later, ROH again announced that Omega would defend the IWGP United States Heavyweight Championship on October 15. On September 29, ROH announced that Minoru Suzuki would take part in all four shows of the tour, which was followed by similar announcements for Will Ospreay and Toru Yano the following day. On October 2, ROH announced that the final night of the tour would air live on internet pay-per-view. In addition, the second and third night of the tour would be available on free live streams for all members of ROH's Ringside service.
Storylines
The Global Wars 2017 shows featured professional wrestling matches that involved different wrestlers from pre-existing scripted feuds and storylines. Wrestlers portrayed villains, heroes, or less distinguishable characters in the scripted events that built tension and culminated in a wrestling match or series of matches. On September 26, 2017, ROH announced the first match for the tour, which would see Kenny Omega defend the IWGP United States Heavyweight Championship against Yoshi-Hashi on October 15. The match was set up on September 24 at NJPW's Destruction in Kobe show, where Yoshi-Hashi challenged Omega after he had successfully defended his title against Juice Robinson. Omega initially dismissed the challenge, but then accepted it, considering Yoshi-Hashi "great warm up". The history between the two dated back to 2016, when Yoshi-Hashi defeated Omega during the 2016 G1 Climax. The two later had a rematch, where Omega successfully defended the Tokyo Dome IWGP Heavyweight Championship challenge rights certificate against Yoshi-Hashi. This match would mark the first time the IWGP United States Heavyweight Championship would be defended in the United States.
