Background

In October 2019, NJPW announced their expansion into the United States with their new American division, New Japan Pro-Wrestling of America.^[2] On October 28, 2022 at Rumble on 44th Street, NJPW announced Battle in the Valley for February 18, 2023 at San Jose Civic in San Jose, California. Tickets for the event sold out while only one match, Mercedes Moné vs. Kairi, had been announced.^[3]

Storylines

Battle in the Valley features professional wrestling matches that involve different wrestlers from pre-existing scripted feuds and storylines. Wrestlers portray villains, heroes, or less distinguishable characters in the scripted events that build tension and culminate in a wrestling match or series of matches.^[4]

At night one of Wrestle Kingdom 17, after Kairi successfully retained the IWGP Women's Championship, she was confronted by a debuting Mercedes Moné. Moné then attacked Kairi before challenging her to a match for the title at Battle of the Valley, which was made official.^[5] This will be Moné's first match since May 15, 2022 (then under the ring name Sasha Banks).^[6]

At The New Beginning in Osaka, Kazuchika Okada successfully defended the IWGP World Heavyweight Championship against Shingo Takagi. After the match, Okada called out Hiroshi Tanahashi to be his next challenger for the title at Battle in the Valley, which Tanahashi accepted. This will be their first match against each other in America since night one of G1 Climax 29 in Dallas, and their first match for the title since Wrestling Dontaku 2018.^[7]

A match between Jay White and Eddie Kingston was signed for Battle in the Valley on January 19 after an altercation the two had on an episode of NJPW Strong.^[8] At The New Beginning in Osaka, White lost a Loser Leaves Japan match to Hikuleo, forcing White out of NJPW's Japanese operations.^[9] During the February 16 edition of Wrestling Observer Live, where both White and Kingston were guests on the show, the two agreed to add a Loser Leaves NJPW stipulation to their match after a heated exchange of words. The stipulation specifically states that should White lose, he would leave NJPW, and if Kingston should lose, he will not be allowed to wrestle for NJPW again without Jay White's permission.^[10]

Pre-show

There were two matches contested on the pre-show. In the opener, Alex Coughlin faced JR Kratos. The former won after a German suplex.

In the main event of the pre-show, Bobby Fish faced David Finlay. Fish won after hitting the Trash Panda.

Preliminary matches

The opening contest was an eight-man tag team match between Kushida, Volador Jr., The DKC and Kevin Knight; and Josh Alexander, Máscara Dorada, Adrian Quest and Rocky Romero. The former won after Knight delivered a DDT, while Alexander was trapped in the Hoverboard Lock.

Next, Fred Rosser defended the Strong Openweight Championship against Kenta. In the end, Juice Robinson came down to the ring and delivered the left hand to God, allowing Kenta to deliver the GTS for the win, and thus making Kenta the first Japanese wrestler to win the Strong Openweight Title.

Next, The Motor City Machine Guns defended the Strong Openweight Tag Team Championship against West Coast Wrecking Crew. The former won after delivering the Dirt Bomb to Royce Isaacs.

Next, Eddie Kingston faced Jay White in a Loser Leaves NJPW match. In the closing stages, Kingston delivered four spinning backfists and two Northern Light Drivers to pickup the victory. After the match, as White was addressing the fans, David Finlay attacked him from behind.

The next bout was a Filthy Rules Fight between Homicide and Tom Lawlor. In the end, Lawlor performed a rear naked choke, with Homicide's middle finger still in the air, which Homicide then passed out to.

The NJPW World Television Championship was defended in this next match between Zack Sabre Jr. and Clark Connors. In the closing stages, Connors performed different pinning variations, but to no avail. Sabre Jr. then forced him to submit to a Fujiwara armbar. After the match, Kevin Knight came out and challenged Sabre Jr. to a championship match.

The penultimate match was for the IWGP Women's Championship between Kairi and Mercedes Moné. Kairi locked in the Ikari, but Moné escaped into the Boss Statement. Kairi then delivered a spinning backfist. In the closing stages, Moné blocked the Insane Elbow, delivered a belly-to-belly suplex and hit the Moné Maker to become the new women's champion.

Main event

The main event was for the IWGP World Heavyweight Championship contested between Kazuchika Okada and Hiroshi Tanahashi. In the early stages, Tanahashi targeted Okada's knee. Tanahashi countered the Rainmaker into a ripcord lariat. As Tanahashi was looking for High Fly Flow, Okada blocked it into a dropkick, delivered an enzeguri, the Cobra Flowsion and the Rainmaker for the victory. After the match, Okada proposed that he and Tanahashi join back together to challenge for the tag team championship. As he was addressing the crowd, Moné came out and also thanked San Jose. Okada and Moné posed with the titles before leaving as the show came to an end.