UFC 58: USA vs Canada was a mixed martial arts event held by the Ultimate Fighting Championship on March 4, 2006. It was held at the Mandalay Bay Events Center on the Las Vegas Strip in Nevada, and broadcast live on pay-per-view in the United States.

In keeping with the theme of the card, each fight featured an American fighter against a Canadian fighter.

Five of the seven Canadian fighters featured, Icho Larenas, Sam Stout, Mark Hominick, Georges St-Pierre, and David Loiseau, were at the time champions in the Canadian TKO Major League MMA promotion.

The show drew a live gate of $1,758,450. The disclosed fighter payroll for UFC 58 was $207,000.

The final scorecard for "USA VS Canada" was  United States 5,  Canada 3.

This event also featured the return of the lightweight division to the UFC, which had been suspended since UFC 49

Georges St-Pierre: $48,000

Rich Franklin: $32,000

Nathan Marquardt: $30,000

BJ Penn: $25,000

Tom Murphy: $10,000

Mike Swick: $10,000

David Loiseau: $9,000

Spencer Fisher: $8,000

Tyson Lee Griffin (born April 20, 1984) is an American mixed martial artist from Albany, California. Griffin currently fights as a Featherweight in the Ultimate Fighting Championship (UFC).

Griffin was a standout wrestler at Albany High School and moved on to wrestle at Skyline Junior College before dropping out. He began training at David Terrell's NorCal Fighting Alliance and the Cesar Gracie Academy. During his first mixed martial arts training session, Terrell cut two gashes over Griffin's left eye, requiring stitches. Griffin states that he committed himself to a career in MMA while in the hospital waiting room. His mother supported him during his first year of training, but after his professional debut he had to get side jobs to support himself through his early career.

Tyson Griffin began his professional career in 2004 in the Gladiator Challenge promotion. In his third bout, he dropped to featherweight to earn a TKO victory over future World Extreme Cagefighting featherweight champion Urijah Faber, which stood as Faber's only defeat for over three years. Griffin went on to win all of his first six fights before facing Duane Ludwig at Strikeforce: Revenge. He won the bout by TKO in the first round, attracting the attention of major promotions. After considering offers from Pride Fighting Championship and the UFC, Griffin signed with the UFC so that he could continue to fight stateside. While cornering for David Terrel at UFC 59 in Las Vegas, Griffin had an opportunity to meet members of the Xtreme Couture camp for the first time.

Joseph James "Joe" Rogan (born August 11, 1967) is an American martial artist, stand-up comedian, actor, writer and color commentator. He is best known for playing Joe Garrelli on the NBC sitcom NewsRadio, commentating for the Ultimate Fighting Championship, hosting the NBC reality show Fear Factor and The Joe Rogan Experience podcast.

Rogan was born in Newark, New Jersey. His paternal grandfather was Irish and the remainder of his ancestry is Italian.

In 1981, at age fourteen, he became a practitioner of Kenpo Karate before transitioning to Taekwondo. He eventually gained a 2nd dan black belt. A four-time state champion in Massachusetts, in 1987 he was the USA Taekwondo U.S. Open Champion. In 1996, he began training in Brazilian Jiu-Jitsu under Jean Jacques Machado, eventually earning his brown belt. In addition, he holds a brown belt in 10th Planet Jiu-Jitsu under Eddie Bravo.

He also practiced and competed in kickboxing.

In 1994, he co-starred on the Fox comedy Hardball as Frank Valente, the young, ego-centric star player on a fictional professional baseball team. From 1995 to 1999, he co-starred on the comedy NewsRadio. He portrayed Joe Garrelli, the electrician at WNYX, a news radio station in New York City. In 2002, he appeared on the episode "A Beautiful Mind" of Just Shoot Me as Chris, Maya Gallo's boyfriend. In 2011, Rogan played his first major character in a movie in the Kevin James movie Zookeeper. He is slated to play himself in an upcoming action-comedy starring Kevin James called Here Comes the Boom, set to be released in the summer of 2012.

Joshua Lawrence Barnett (born November 10, 1977) is an American mixed martial artist and professional wrestler who currently fights in the heavyweight division of Strikeforce. Barnett has been an accomplished fighter in mixed martial arts, winning the King of Pancrase Openweight Championship. He was a finalist in the Pride 2006 Openweight Grand Prix. As of February 2012, Barnett is ranked the #3 heavyweight fighter in the world by Fight!Magazine, #3 by MMAWeekly.com and the #8 heavyweight fighter in the world by Sherdog.

After having his UFC HW title stripped due to testing positive for 3 banned substances, Josh Barnett began his overseas career as a professional wrestler in the New Japan Pro Wrestling (NJPW) organization, where he wrestled numerous matches in 2003 and 2004. In his first match, he wrestled champion Yuji Nagata for the IWGP Heavyweight Championship. Although unsuccessful in that match, Barnett formed a tag team with Perry Saturn and was undefeated in the following NJPW tour, Fighting Spirit 2003. Barnett wrestled over 50 matches in total for the NJPW promotion.

Terius Youngdell Nash (Born September 20, 1977), better known by his stage name The-Dream, is an American singer-songwriter and record producer. He is known for co-writing chart topping hits such as "Baby" for Justin Bieber, "Umbrella" for Rihanna and "Single Ladies (Put a Ring on It)" for Beyoncé, as well as for his three solo albums, Love Hate, Love vs. Money, and Love King.

Terius Nash was born in Rockingham, North Carolina and moved with his mother, Reva Nash, to Atlanta at the age of 3. He played trumpet, drums, and guitar as a child. His mother died in 1992 when Nash was fifteen years old, an event which would inspire him to write songs. He states that the death of his mother gave him a "soft spot" for women, which he credits to his desire to write songs about female empowerment such as Rihanna's "Umbrella". He moved in with his grandfather, a concrete mason who instilled a strong work ethic in young Nash. Of his grandfather, Nash recalls "He came out of a bad time for blacks in the South, but even though we lived in the hood, we had a boat, some cars and a house that was paid for. So I’ve always had a different outlook on life. There’s nothing I can’t do."