His first singles contest of 1998 was a lost to Owen Hart. The next week, Vega and Pérez defeated Taka Michinoku and Scott Taylor. He was the 26th entrant in the 1998 Royal Rumble, and, like the year before, was eliminated by Steve Austin. In the Royal Rumble's main event, Vega and Los Boricuas attacked the Undertaker alongside the New Age Outlaws to aid Shawn Michaels in defeating him in a casket match. Vega headlined on February, when he replaced the injured Shawn Michaels in the eight-man tag main event, teaming with Triple H and the New Age Outlaws in a losing effort. On the March 9 "Raw", he wrestled Triple H to a no contest.