premise: A.J. Styles won a championship.
hypothesis: A.J. Styles . He was also the first X Division Champion , a title he held six times . He simultaneously appeared in Ring of Honor ( ROH ) from 2002 -- 2006 , winning the ROH World Tag Team Championship ( with Amazing Red ) and becoming the first ROH Pure Champion . In 2014 , he signed with New Japan Pro-Wrestling ( NJPW ) and won the IWGP Heavyweight Championship in his first match with the company , later becoming the leader of the Bullet Club . He has also competed extensively on the independent circuit , winning titles such as the PWG World Championship and the RPW British Heavyweight Championship , among many others . After appearing at his first WrestleMania that April , Styles headlined multiple pay-per-view events en route to winning his first WWE Championship at Backlash in September , holding the title up until 2017 's Royal Rumble in January .