Question: Pedro Rizzo had a victory over what American mixed martial artist know for his success in the early years of UFC?

Context paragraphs:
Miesha Tate: Miesha Theresa Tate ( ; born August 18, 1986) is an American Mixed Martial Arts Pundit and former mixed martial artist who competed in the Ultimate Fighting Championship (UFC) and is a former UFC Women's Bantamweight Champion.  Primarily known for her grappling ability, Tate became a wrestler while attending Franklin Pierce High School in Tacoma, Washington and won a state championship during her senior year in 2005.  She began her professional mixed martial arts (MMA) career in 2007, and won the bantamweight championship of the Freestyle Cage Fighting promotion in 2009.  Tate gained increased recognition in 2011, when she won the Strikeforce Women's Bantamweight Championship.  She has also won a silver medal in the FILA Grappling Championships.

Pedro Rizzo: Pedro Augusto Rizzo (] ; born May 3, 1974) is a retired Brazilian mixed martial artist, kickboxer and Muay Thai fighter who competed for the UFC, PRIDE, M-1 Global, and Affliction.  Although he never captured the UFC Heavyweight Championship, Rizzo competed for it three times and was regarded as a top contender for many years.  Coming from a Vale Tudo background, Rizzo is regarded as one of the most dangerous strikers in MMA history.  Rizzo holds notable victories over former UFC champions Mark Coleman, Dan Severn, Josh Barnett, Andrei Arlovski, Ricco Rodriguez and Ken Shamrock.

Chris Lytle: Chris Scott Lytle (born August 18, 1974) is a retired American mixed martial artist, boxer and a veteran of the Ultimate Fighting Championship.  Lytle was prominently featured as a Welterweight on The Ultimate Fighter 4: The Comeback.  While he is probably best known for competing the UFC, where he held a record of 10-10, Lytle has also fought in the WEC, Pancrase, and the Cage Rage Championships He is the former Cage Rage World Welterweight Champion.  In Lytle's mixed martial arts and boxing career he was never knocked out or submitted, though he did lose in mixed martial arts competition by TKO by way of cut stoppage.

Dan Henderson: Daniel Jeffery Henderson (born August 24, 1970) is an American former mixed martial artist and Olympic wrestler, who last competed as a middleweight in the Ultimate Fighting Championship.  He was the last Strikeforce Light Heavyweight Champion and was the last Welterweight (80 kg ) and Middleweight (95 kg ) champion of Pride Fighting Championships.  Additionally, Henderson was the Brazil Open '97 Tournament Champion, the UFC 17 Middleweight Tournament Champion, the Rings: King of Kings 1999 Tournament Champion and the Pride Weltwerweight Grand Prix Tournament Champion.  During his career, Henderson also challenged for the UFC Middleweight Championship (2x), the UFC Light Heavyweight Championship and the Strikeforce Middleweight Championship.  He was the first mixed martial artist to concurrently hold two titles in two different weight classes in a major MMA promotion.  At the time of his retirement after UFC 204, he was the oldest fighter on the UFC roster.  Known to be one of the greatest mixed martial artists of all time having defeated a total of seventeen MMA world champions across four major MMA promotions (UFC, PRIDE FC, Strikeforce, and RINGS).

Joe Lauzon: Joseph Edward Lauzon Jr. (born May 22, 1984) is an American mixed martial artist competing in the UFC's Lightweight division.  He is tied with Nate Diaz as having the most post-fight bonus awards in UFC history.  Joe's younger brother, Dan Lauzon, is also a mixed martial artist.

Anderson Silva: Anderson da Silva (] ; born April 14, 1975) is a Brazilian mixed martial artist and former UFC Middleweight Champion.  Silva holds the longest title streak in UFC history, which ended in 2013 after 2,457 days, with 16 consecutive wins and 10 title defenses.  He has 13 post-fight bonuses, the second most in UFC history.  UFC president Dana White and several mixed-martial-arts publications have called Silva the greatest mixed martial artist of all time.  He is currently ranked the #6 contender in official UFC middleweight rankings.

Sean Sherk: Sean Keith Sherk (born August 5, 1973) is a retired American mixed martial artist and former UFC Lightweight Champion.  Sherk competed in the Ultimate Fighting Championship and was one of the first combatants to have been a championship competitor in multiple weight divisions (having also competed for the UFC Welterweight Championship).  He was the second UFC Lightweight Champion in the organization's history after Jens Pulver vacated his title 5 years earlier.  Sherk also spent time competing in the Japan-based organizations, PRIDE Fighting Championships and Pancrase; going undefeated in both promotions.  He holds one of the longest undefeated streaks in mixed martial arts history, with only four career losses, all to fellow-UFC Champions.  Sherk announced his official retirement from mixed martial arts competition in September 2013 having last fought three years prior.

Ken Shamrock: Kenneth Shamrock (born Kenneth Wayne Kilpatrick; February 11, 1964) is an American mixed martial artist, Ultimate Fighting Championship (UFC) Hall of Famer, and retired professional wrestler.  He emerged as one of the biggest stars in the history of mixed martial arts, headlining over 15 main events and co-main events in the UFC and Pride Fighting Championships during the course of his career and set numerous pay-per-view records with his drawing power.  Shamrock is widely considered to be a legendary figure and icon in the sport of mixed martial arts.  Shamrock was named The World's Most Dangerous Man by ABC News in a special entitled "The World's Most Dangerous Things" in the early part of his UFC career, a moniker which has stuck as his nickname.

Josh Barnett: Joshua Lawrence Barnett (born November 10, 1977) is an American mixed martial artist and professional wrestler who previously competed in the Heavyweight division of the UFC.  He is the former UFC Heavyweight Champion, as well as the inaugural and current Metamoris Heavyweight Champion.  He has also won the King of Pancrase Openweight Championship and was a finalist in the PRIDE 2006 Openweight Grand Prix and the Strikeforce Heavyweight Grand Prix Championship.  Barnett mixed martial arts record of "over 50-8" when both sanctioned and unsanctioned bouts are counted.  He has also competed in Affliction, World Victory Road, DREAM and Impact FC.

Dan Severn: Daniel DeWayne Severn (born June 8, 1958) is an American mixed martial artist, actor and occasional professional wrestler, notable for his success in the early years of Ultimate Fighting Championship (UFC) tournaments.  Severn has fought and wrestled for many mixed martial arts and professional wrestling promotions (known as Dan "The Beast" Severn in professional wrestling), including King of the Cage, PRIDE FC, Cage Rage, WEC, RINGS, MFC and the World Wrestling Federation.  He holds a professional MMA Record of 101–19–7 and is a UFC Hall of Famer and a former UFC Superfight Champion.

Supporting paragraphs: Pedro Rizzo Dan Severn
Answer: Daniel DeWayne Severn