- In February 2005, Matthews signed a WWE developmental deal.
- On the April 14, 2005 episode of "Smackdown," Mercury (Matthews), Johnny Nitro and Melina debuted during Carlito Caribbean Cool's new interview segment.
- Mercury and Nitro defeated Rey Mysterio Jr. and Eddy Guerrero for the WWE Tag Team title at the April 18, 2005 "Smackdown" tapings in New York, NY.
- At Judgment Day '05, MNM defeated Charlie Haas and Hardcore Holly to retain the WWE Tag Team title.
- At the October 25, 2005 Smackdown tapings, MNM beat Animal and Heidenreich, Mexicools, and William Regal and Paul Burchill to regain the WWE Tag Team title.
- MNM defeated the Mexicools (Psicosis and Super Crazy) at Armageddon '05.
- At the December 27, 2005 Smackdown tapings in Uncasville, CT, MNM defeated Batista and Rey Mysterio to regain the WWE Tag Team title.
- WWE released Mercury on March 26, 2007.