Battle in the Valley was a professional wrestling pay-per-view (PPV) event produced by New Japan Pro-Wrestling (NJPW).

In the main event, Kazuchika Okada defeated Hiroshi Tanahashi to retain the IWGP World Heavyweight Championship.

In October 2019, NJPW announced their expansion into the United States with their new American division, New Japan Pro-Wrestling of America (NJoA).

[5] Battle in the Valley features professional wrestling matches that involve different wrestlers from pre-existing scripted feuds and storylines.

[6] At night one of Wrestle Kingdom 17, after Kairi successfully retained the IWGP Women's Championship, she was confronted by a debuting Mercedes Moné.

[8] At The New Beginning in Osaka, Kazuchika Okada successfully defended the IWGP World Heavyweight Championship against Shingo Takagi.

[9] 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.

[11] 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 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.

Next, The Motor City Machine Guns defended the Strong Openweight Tag Team Championship against West Coast Wrecking Crew.

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.