ROH/NJPW War of the Worlds (2017)
| War of the Worlds (2017) | |||
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Promotional poster for the New York City show | |||
| Promotion(s) | New Japan Pro-Wrestling Ring of Honor | ||
| Date | May 7, 10, 12 and 14, 2017 | ||
| City | Night 1: Toronto, Ontario, Canada Night 2: Dearborn, Michigan, U.S. Night 3: New York City, New York, U.S. Night 4: Philadelphia, Pennsylvania, U.S. | ||
| Venue | Night 1: Ted Reeve Arena Night 2: Ford Community & Performing Arts Center Night 3: Hammerstein Ballroom Night 4: 2300 Arena | ||
| Attendance | Night 1: 1,500 Night 2: 1,000 Night 3: 1,800 Night 4: 1,100 | ||
| Pay-per-view chronology | |||
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| War of the Worlds chronology | |||
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| New Japan Pro-Wrestling events chronology | |||
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War of the Worlds (2017) was a professional wrestling tour co-produced by the American Ring of Honor (ROH) and Japanese New Japan Pro-Wrestling (NJPW) promotions.
The tour's four events took place on May 7 at the Ted Reeve Arena in Toronto, Ontario; May 10 at the Ford Community & Performing Arts Center in Dearborn, Michigan; May 12 at the Hammerstein Ballroom in New York City; and May 14 at the 2300 Arena in Philadelphia, Pennsylvania.
The third night aired live on pay-per-view (PPV), while the fourth night was taped for four future episodes, including the 300th overall episode, of ROH's weekly television program, Ring of Honor Wrestling. 2017 was the fourth year in which ROH and NJPW co-produced events under the War of the Worlds name. During the third night of the tour, NJPW announced the creation of the IWGP United States Heavyweight Championship.