Wrestle Kingdom 9 in Tokyo Dome was a pay-per-view (PPV) professional wrestling event produced by the New Japan Pro-Wrestling (NJPW) promotion, which took place at the Tokyo Dome in Tokyo, Japan on January 4, 2015. It was the 24th January 4 Tokyo Dome Show and the first event on the 2015 NJPW schedule. The event featured ten professional wrestling matches and one pre-show match, six of which were for championships.

In the double main event, Shinsuke Nakamura successfully defended the IWGP Intercontinental Championship against Kota Ibushi, and Hiroshi Tanahashi successfully defended the IWGP Heavyweight Championship against Kazuchika Okada. A Tanahashi–Okada heavyweight title match had headlined Wrestle Kingdom 7 two years earlier and was also the main event the following year at Wrestle Kingdom 10. Although the IWGP Junior Heavyweight Tag Team Championship was successfully defended, the IWGP Tag Team Championship, IWGP Junior Heavyweight Championship and NEVER Openweight Championship changed hands. The appearance of Pro Wrestling Noah wrestlers led to a storyline in which NJPW's Suzuki-gun group began wrestling at Noah events starting the week after Wrestle Kingdom 9.

The event was attended by 36,000 people. Through NJPW's partnership with Global Force Wrestling (GFW), the event was broadcast with English commentary as a GFW event. It was available on PPV television in the United States and Canada, and broadcast worldwide on the Internet via Flipps and NJPW World. Critics issued positive reviews; Philly.com said it featured "good, quality wrestling", while Paste magazine said it presented "some of the most passionate and poignant performance art today". Readers of the Wrestling Observer Newsletter voted Wrestle Kingdom 9 the Best Major Wrestling Show of 2015; they also named the Ibushi–Nakamura match as the 2015 Pro Wrestling Match of the Year.

Production + Other on-screen personnelRole:Name:Japanese ommentatorsKazuo YamazakiKakuryo YasudaKatsuhiko KanazawaShinpei NogamiSoichi ShibataShumpei TerakawaYohei OnishiShinji YoshinoEnglish commentatorsJim RossMatt StrikerRing announcersMakoto AbeRefereesKenta SatoMarty AsamiRed Shoes UnnoTiger Hattori

Background Wrestle Kingdom has been described as "New Japan's major annual show" and the "equivalent" of WWE's WrestleMania event. Wrestle Kingdom 9 in Tokyo Dome was promoted as the "largest wrestling show in the world outside of the United States" and was the 24th January 4 Tokyo Dome Show, although previous events were held under different names.

On August 10, 2014, NJPW made two announcements. Firstly, Wrestle Kingdom 9 would be held at the Tokyo Dome on January 4, 2015. Secondly, NJPW revealed a partnership with Jeff Jarrett's Global Force Wrestling, which it approached about bringing the event to a new market. On November 4, GFW announced that it would present the event live on American pay-per-view television and that it had a PPV market of 125 million homes.

The event was broadcast on American PPV as the first GFW event. The four-hour "GFW Presents New Japan Pro Wrestling's Wrestle Kingdom 9" telecast was available from pay-per-view providers in the United States, including DirecTV, Dish Network, AT&T U-verse, Comcast, Verizon FiOS and all cable systems, and in Canada from Bell ExpressVu, Rogers, Shaw, Sasktel and Telus. The event also aired live on NJPW World, an Internet streaming site introduced by NJPW in early December 2014 which reportedly had 20,000 subscribers worldwide in late January 2015. In Japan, the event also aired on PPV in SKY PerfecTV!'s Sukachan service. In January 2016, Dave Meltzer of the Wrestling Observer Newsletter stated that Wrestle Kingdom 9 "was the only live pro wrestling PPV event ever broadcast [internationally] from Japan".

The GFW version of the event was streamed worldwide (except in North America and Japan) on the Flipps application for Internet-connected smartphones, tablet computers and smart TVs. On Flipps, the show was available live and on-demand for 30 days after its initial airing.

On November 11, 2014, GFW announced that Jim Ross would be the lead announcer for its version of the event. It was Ross's first professional-wrestling broadcast since his 2013 departure from WWE. Ross attempted to obtain Mike Tenay of Total Nonstop Action Wrestling (TNA) for color commentary, but TNA refused. Others considered for the job were John Pollock, Mauro Ranallo and Kevin Nash, before GFW settled on Matt Striker.

Before the event, the GFW broadcasts experienced setbacks. Many cable companies decided not to air the event live, opting instead for a replay of UFC 182, and the stream would not run on three of the four most used devices compatible with Flipps: Chromecast, Xbox 360 and Xbox One. According to Dave Meltzer, NJPW undercut GFW by including the event in the $8.42 monthly price for NJPW World; the GFW broadcast of Wrestle Kingdom 9 alone was $34.95. The NJPW World stream had Japanese commentary only.

AXS TV, which acquired the rights to broadcast Wrestle Kingdom 9 from the TV Asahi Corporation, aired the event in five parts from October 9 to November 6, 2015, to viewers in the United States, Canada, Mexico and the Caribbean. Commentary was provided by Mauro Ranallo and Josh Barnett.

Storylines Wrestle Kingdom 9 featured ten professional wrestling matches and one pre-show match. It saw professional wrestlers performing as characters in scripted events pre-determined by the hosting promotion, New Japan Pro-Wrestling.

The event was headlined by Hiroshi Tanahashi defending the IWGP Heavyweight Championship against Kazuchika Okada. Tanahashi won the title by defeating A.J. Styles on October 13, 2014, at the NJPW King of Pro-Wrestling event. Okada became the number one contender at Wrestle Kingdom 9 by winning the G1 Climax on August 10, 2014. Over the following months, he defended his position against Karl Anderson and Tetsuya Naito. The Wrestle Kingdom 9 main event was the seventh match between Okada and Tanahashi since February 2012 and their second January 4 Tokyo Dome Show main event after Wrestle Kingdom 7 on January 4, 2013.

Wrestle Kingdom 9's other main event was determined at the November 8, 2014, NJPW Power Struggle show. After Shinsuke Nakamura defended the IWGP Intercontinental Championship against Katsuyori Shibata, Kota Ibushi entered the ring, assaulted Nakamura, and issued a title challenge; Nakamura accepted. This was a turning point in Ibushi's career, since he had recently joined the heavyweight division after gaining weight. A previous singles match between Nakamura and Ibushi during the 2013 G1 Climax was ranked "Best Bout of the Year" by the Tokyo Sports newspaper.

Previous IWGP Heavyweight Champion A.J. Styles (of the Bullet Club group) and fellow top contender Tetsuya Naito were slated to wrestle each other at Wrestle Kingdom 9. During the 2014 G1 Climax (when Styles was IWGP Heavyweight Champion), Naito pinned him in a non-title tournament match but did not have a title shot before Styles lost to Tanahashi. Since Styles did not receive a rematch with Tanahashi, it was theorized by the American media that the Wrestle Kingdom 9 winner would be the top contender.

Another title that was contested at Wrestle Kingdom 9 was the IWGP Tag Team Championship, with Doc Gallows and Karl Anderson defending against Hirooki Goto and Katsuyori Shibata. Goto and Shibata teamed up after a match against each other at the January 4, 2014, NJPW Wrestle Kingdom 8, and the two former high-school classmates named their team "Meiyu Tag" (meiyu means "sworn brothers" in Japanese). In March 2014, they entered the IWGP Tag Team Championship picture by defeating the Bullet Club's IWGP Tag Team Champions Anderson and Gallows in a non-title match at NJPW's 42nd-anniversary event. This led to a title match at the April 6 NJPW Invasion Attack 2014, where Anderson and Gallows retained the title. In December, Goto and Shibata won the 2014 World Tag League tournament, defeating Anderson and Gallows in the final to earn another chance at the title.

Wrestle Kingdom 9 also showcased a rivalry between Toru Yano and the Suzuki-gun group, which had been going on since 2013. In May 2014, Yano's tag team partner Takashi Iizuka joined Suzuki-gun, which led to Yano recruiting Kazushi Sakuraba as his new tag team partner to continue the feud. The rivalry lasted for the rest of the year, resulting in two Wrestle Kingdom 9 matches: one between former mixed martial artists Sakuraba and Suzuki-gun leader Minoru Suzuki, and a tag team match pitting Yano and a "mystery partner" against a Suzuki-gun team. The latter became an eight-man tag team match, with Suzuki-gun represented by Iizuka, Shelton X Benjamin, and the Killer Elite Squad (Davey Boy Smith Jr. and Lance Archer). Yano recruited three partners from the Pro Wrestling Noah promotion: Naomichi Marufuji and TMDK (Mikey Nicholls and Shane Haste).

The Wrestle Kingdom 9 undercard featured several matches involving the Bullet Club, which was led by A.J. Styles. The group dominated NJPW for most of 2014, holding all four of its heavyweight championships during the summer. After the NJPW–GFW partnership was forged, GFW head Jeff Jarrett joined the Bullet Club on August 10. On December 7, during a Bullet Club post-match assault on Tomoaki Honma, NJPW veteran tag team Tencozy (Hiroyoshi Tenzan and Satoshi Kojima) stormed into the ring to the aid of Honma, driving the Bullet Club away. They then joined Honma to challenge the stable to a six-man tag team match at Wrestle Kingdom 9. Bad Luck Fale, Yujiro Takahashi and Jeff Jarrett—making his NJPW ring debut—were scheduled to represent the Bullet Club at the event.

Event Pre-show The pre-show featured one match, the New Japan Rumble. Tiger Mask and Yuji Nagata began the match, with new wrestlers entering each minute. Wrestlers worked to eliminate each other, and the last remaining wrestler won. In this match, eliminations could occur via pinfall, submission, disqualification, or being thrown out of the ring over the top rope. The Great Kabuki, Yoshiaki Fujiwara, and Hiro Saito were surprise entrants. Captain New Japan was the first eliminated when Tama Tonga threw him over the top rope. Sho Tanaka and Yohei Komatsu worked together to eliminate Taichi and Tiger Mask. After Tanaka was eliminated by submitting to Manabu Nakanishi's torture rack, Tonga eliminated Nakanishi and Komatsu via pinfall, the latter after a jumping DDT. Yoshi-Hashi threw Tonga over the top rope for the elimination, leaving himself and Nagata in the match. Nagata won the match by slamming Hashi against the mat with a belly-to-back suplex, bridging into a pinfall elimination at 26 minutes and 9 seconds.

Undercard