They first began teaming together in 1993 in independent promotions in North Carolina, winning the NWA 2000 Tag Team Championship in NWA 2000, and founded the Organization of Modern Extreme Grappling Arts, where they held the OMEGA Tag Team Championship. They both signed contracts with the WWF in 1998, and were given Michael Hayes as their manager. After dumping Hayes, they had a quick stint with Gangrel, and then Terri, before gaining a permanent manager in their real-life friend Lita. The addition of Lita led to them being renamed "Team Xtreme". They split as a team in 2002, but reunited in 2006 to feud with MNM, before focusing on their singles careers again in 2007, although they occasionally teamed together. Following a scripted feud between the two brothers in early 2009, Jeff left WWE in August, with Matt departing in late 2010. The Hardys reunited in TNA in January 2011 as members of the Immortal stable. In August 2011, Matt was released from his contract with TNA, but returned in 2014.
The Hardy Boyz gained fame for their participation in ladder matches and Tables, Ladders, and Chairs matches. Overall they are eight-time tag team champions between WWE and TNA, having won the World Tag Team Championship six times, the WCW World Tag Team Championship once, and the TNA World Tag Team Championship once.