Supercard of Honor IX was a professional wrestling event produced by Ring of Honor (ROH), which took place on March 27, 2015 at The Sports House in Redwood City, California.

This professional wrestling event features eight professional wrestling matches, which involve different wrestlers from pre-existing scripted feuds, plots, and storylines that played out on ROH's television programs. Wrestlers portrayed villains or heroes as they followed a series of events that built tension and culminated in a wrestling match or series of matches.

Talent from New Japan Pro Wrestling (NJPW), with whom ROH has a talent exchange agreement, also appeared at the event.

At 13th Anniversary Samoa Joe returned to Ring of Honor in his first appearance since 2008. Samoa Joe came out and cut a promo laying claim to the ROH World Heavyweight Championship, challenging World Champion, Jay Briscoe in the process.

On March 28 addition of Ring of Honor television, The Decade members B.J. Whitmer and Adam Page came out to the ring and cut a promo on Steve Corino making it seem like they wanted him to join them. When Steve grabbed the mic. and said he would not join the Decade, Whitmer said, we weren't talking about you. They then point to Corino's son, Colby Corino. Colby gets in the ring and joins the Decade. Jimmy Jacobs ran out and tried to neutralize the situation and ends up sending The Decade out of the ring. He proceeds to comfort Steve Corino, signaling the end of Jacobs' alliance in the Decade.

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