Hardy won the Hardcore Championship on April 24, 2000, on Raw Is War, by defeating Crash Holly, but lost it back to Holly three days later on Smack Down!
, when Holly applied the "24/7 rule" during Hardy's title defense against Jeff.
As High Voltage, he teamed with Venom to claim the New Frontier Wrestling Association (NFWA) Tag Team Championship in March 1995.
In 1997, Matt and Jeff created their own wrestling promotion, The Organization of Modern Extreme Grappling Arts (frequently abbreviated to OMEGA Championship Wrestling, or simply OMEGA), in which Matt competed under the name High Voltage.
It was during this time that Matt and Jeff experimented with different ring names, at one stage being called Ingus (Matt) and Wildo Jinx (Jeff).
In Matt's final singles match for the promotion before signing a full-time contract he lost to Val Venis on a taping of Shotgun in 1998.
The Hardy Boyz used a cruiserweight, fast-paced high flying style in their matches, often leaping from great heights to do damage to their opponents (and themselves in the process).