IWGP Heavyweight Championship
On January 4, 2008, Nakamura defeated his rival Tanahashi in the main event of Wrestle Kingdom II in Tokyo Dome, winning the IWGP Heavyweight Championship for the second time. On February 17, Nakamura defeated Kurt Angle to win the IGF version of the IWGP Heavyweight Championship, unifying it with his own NJPW version of the title. He lost the IWGP Heavyweight Championship to All Japan Pro Wrestling (AJPW) representative Keiji Mutoh in Osaka on April 27.