WWE has apparently dropped the "Buddy" from RAW Tag Team Champion Buddy Murphy's official ring name.
WWE often drops the first or last name from Superstar ring names. WWE previously dropped "Mustafa" from Mustafa Ali's ring name, but they added it back after a few months.
Murphy currently holds the RAW Tag Team Titles with Seth Rollins. They have been in a stable with The Authors of Pain for a few weeks now.