G1 Supercard was a professional wrestling supershow co-produced by the American Ring of Honor (ROH) and Japanese New Japan Pro-Wrestling (NJPW) promotions.

[2] Both the IWGP Heavyweight Championship and ROH World Championship were defended on the card, as IWGP Champion Jay White defended against New Japan Cup winner Kazuchika Okada, while Survival of the Fittest winner Marty Scurll and Matt Taven wrestled for the ROH World Title against champion Jay Lethal in a ladder match.

The event's undercard saw two Winner Take All matches between NJPW and ROH champions, and UK partner promotion Revolution Pro Wrestling (RPW) had its top title – the British Heavyweight Championship – defended as well.

On the following day, NJPW officially announced a match between the IWGP and ROH champions, noting that Jay and Mark Briscoe still had a defense scheduled before the show against Villain Enterprises (PCO and Brody King).

On the NJPW's 47th Anniversary Event, Taiji Ishimori successfully defended the IWGP Junior Heavyweight Championship against Jyushin Thunder Liger.

The challenge was accepted by Dragon Lee, representing Mexico's Consejo Mundial de Lucha Libre (CMLL) promotion – a longtime partner of both NJPW and ROH.

At Wrestle Kingdom 13, Zack Sabre Jr. defeated Tomohiro Ishii to win the RPW British Heavyweight Championship.

Larry Csonka of 411Mania described G1 Supercard as "...a tale of two shows, with NJPW delivering bangers and a NJPW experience, while ROH failed and opted to trot out The Beautiful People, gave a cold Kenny King another title chance, went too long with Bully Ray, Klein’s title win, and wasted a huge opportunity on the biggest platform possible.