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Robert Guerrero began hearing whispers that he was washed up last June, when the former two-division champion had to rise from a fourth-round knockdown during a disputed split decision victory over Aron Martinez.
Robert Guerrero believes he’s a class above David Emanuel Peralta. Now he just has to go out and prove it.
It’s been more than six years since Robert Guerrero has knocked out an opponent, so the former world champion is itching to unload on someone.
Loss vs David Emanuel Peralta
Aug 27, 2016 • Honda Center, Anaheim, California
Robert Guerrero LOSES to David Emanuel Peralta by SD in Round 12 of 12
LOSS vs Danny Garcia
Jan 23, 2016 • Staples Center, Los Angeles
Danny Garcia WINS against Robert Guerrero by UD in Round 12 of 12
Win vs Aron Martinez 19-3-1
Jun 06, 2015 • StubHub Center, Carson, California
Robert Guerrero WINS against Aron Martinez by SD in Round 10 of 10
LOSS vs Thurman
Mar 07, 2015 • MGM Grand, Garden Arena, Las Vegas, Nevada
Thurman WINS against Guerrero by UD in Round 12 of 12
Win vs Yoshihiro Kamegai 24-1-1
Jun 21, 2014 • StubHub Center, Carson, California, USA
Robert Guerrero WINS against Yoshihiro Kamegai by UD in Round 12 of 12
LOSS vs Floyd Mayweather Jr 43-0-0
May 04, 2013 • MGM Grand, Grand Garden Arena, Las Vegas, Nevada, USA
Floyd Mayweather Jr WINS against Robert Guerrero by UD in Round 12 of 12
Win vs Andre Berto 30-1-1
Nov 24, 2012 • Citizens Business Bank Arena, Ontario, California, USA
Robert Guerrero WINS against Andre Berto by UD in Round 12 of 12
Win vs Selcuk Aydin 23-0-0
Jul 28, 2012 • HP Pavilion, San Jose, California, USA
Robert Guerrero WINS against Selcuk Aydin by UD in Round 12 of 12
Win vs Michael Katsidis 27-3-0
Apr 09, 2011 • MGM Grand, Las Vegas, Nevada, USA
Robert Guerrero WINS against Michael Katsidis by UD in Round 12 of 12
Win vs Vicente Escobedo 22-2-0
Nov 06, 2010 • Prudential Center, Newark, New Jersey, USA
Robert Guerrero WINS against Vicente Escobedo by UD in Round 10 of 10
Win vs Joel Casamayor 37-4-1
Jul 31, 2010 • Mandalay Bay Resort & Casino, Las Vegas, Nevada, USA
Robert Guerrero WINS against Joel Casamayor by UD in Round 10 of 10
Win vs Roberto David Arrieta 35-15-4
Apr 30, 2010 • Tropicana Hotel & Casino, Las Vegas, Nevada, USA
Robert Guerrero WINS against Roberto David Arrieta by TKO in Round 8 of 10
Win vs Malcolm Klassen 24-4-2
Aug 22, 2009 • Toyota Center, Houston, Texas, USA
Robert Guerrero WINS against Malcolm Klassen by UD in Round 12 of 12
Win vs Efren Hinojosa 30-5-1
Jun 12, 2009 • HP Pavilion, San Jose, California, USA
Robert Guerrero WINS against Efren Hinojosa by RTD in Round 8 of 10
No Contest vs Daud Yordan 23-0-0
Mar 07, 2009 • HP Pavilion, San Jose, California, USA
Robert Guerrero Daud Yordan by ND in Round 2 of 10
Win vs Edel Ruiz 29-21-4
Jan 24, 2009 • Staples Center, Los Angeles, California, USA
Robert Guerrero WINS against Edel Ruiz by TKO in Round 1 of 10
Win vs Jason Litzau 23-1-0
Feb 29, 2008 • Tachi Palace Hotel & Casino, Lemoore, California, USA
Robert Guerrero WINS against Jason Litzau by KO in Round 8 of 12
Win vs Martin Honorio 24-3-1
Nov 03, 2007 • Desert Diamond Casino, Tucson, Arizona, USA
Robert Guerrero WINS against Martin Honorio by TKO in Round 1 of 12
WIN vs Spend Abazi 35-1-0
Feb 23, 2007 • Falconer Centeret, Frederiksberg, Denmark
Spend Abazi LOSES to Robert Guerrero by TKO in Round 9 of 12
No Contest vs Orlando Salido 27-9-2
Nov 04, 2006 • Mandalay Bay Resort & Casino, Las Vegas, Nevada, USA
Robert Guerrero Orlando Salido by ND in Round 12 of 12
Win vs Eric Aiken 16-4-0
Sep 02, 2006 • Staples Center, Los Angeles, California, USA
Robert Guerrero WINS against Eric Aiken by RTD in Round 8 of 12
Win vs Gamaliel Diaz 20-5-2
Jun 23, 2006 • Oakland Arena, Oakland, California, USA
Robert Guerrero WINS against Gamaliel Diaz by KO in Round 6 of 12
Win vs Sandro Marcos 24-14-2
May 18, 2006 • HP Pavilion, San Jose, California, USA
Robert Guerrero WINS against Sandro Marcos by TKO in Round 3 of 10
Loss vs Gamaliel Diaz 19-5-2
Dec 02, 2005 • Tachi Palace Hotel & Casino, Lemoore, California, USA
Robert Guerrero LOSES to Gamaliel Diaz by SD in Round 12 of 12
Win vs Sammy Ventura 22-14-0
Sep 16, 2005 • Palace Indian Gaming Center, Lemoore, California, USA
Robert Guerrero WINS against Sammy Ventura by KO in Round 1 of 12
Win vs Adrian Valdez 16-3-3
Apr 01, 2005 • Palace Indian Gaming Center, Lemoore, California, USA
Robert Guerrero WINS against Adrian Valdez by TKO in Round 12 of 12
Win vs Cesar Figueroa 28-4-2
Dec 09, 2004 • Pechanga Resort & Casino, Temecula, California, USA
Robert Guerrero WINS against Cesar Figueroa by KO in Round 4 of 12
Win vs Enrique Sanchez 30-2-4
Jun 03, 2004 • Chinook Winds Casino, Lincoln City, Oregon, USA
Robert Guerrero WINS against Enrique Sanchez by TKO in Round 8 of 10
Win vs Juan Polo Perez 46-35-4
Apr 24, 2004 • Miccosukee Indian Gaming Resort, Miami, Florida, USA
Robert Guerrero WINS against Juan Polo Perez by TKO in Round 2 of 6
Draw vs Julian Rodriguez 15-9-1
Mar 14, 2004 • Pechanga Entertainment Center, Temecula, California, USA
Robert Guerrero DRAWS with Julian Rodriguez by TD in Round 1 of 8
Win vs Jose Luis Tula 15-8-2
Jun 08, 2003 • Texas Station Casino, North Las Vegas, Nevada, USA
Robert Guerrero WINS against Jose Luis Tula by TKO in Round 1 of 10
Win vs David Vasquez 17-8-3
May 04, 2003 • Spotlight 29 Casino, Coachella, California, USA
Robert Guerrero WINS against David Vasquez by TKO in Round 1 of 10
Win vs Jose Alfonso Rodriguez 12-11-2
Dec 20, 2002 • American Airlines Arena, Miami, Florida, USA
Robert Guerrero WINS against Jose Alfonso Rodriguez by TKO in Round 2 of 6
Win vs Freddy Castro 1-4-1
Jul 03, 2002 • Hyatt Regency Hotel, Monterey, California, USA
Robert Guerrero WINS against Freddy Castro by UD in Round 6 of 6
Win vs Marcos Badillo 15-20-1
Apr 14, 2002 • Hard Rock Hotel and Casino, Las Vegas, Nevada, USA
Robert Guerrero WINS against Marcos Badillo by UD in Round 6 of 6
Win vs Robert Enriquez 4-3-0
Mar 10, 2002 • Green Valley Ranch Resort, Las Vegas, Nevada, USA
Robert Guerrero WINS against Robert Enriquez by UD in Round 4 of 4
Win vs Joaquin Candelario 5-20-3
Feb 08, 2002 • Pechanga Entertainment Center, Temecula, California, USA
Robert Guerrero WINS against Joaquin Candelario by UD in Round 4 of 4
Win vs Arthur Trevino 0-0-0
Jan 25, 2002 • Young Pavilion, Pembroke Pines, Florida, USA
Robert Guerrero WINS against Arthur Trevino by UD in Round 4 of 4
Win vs Oscar Rosales 2-0-1
Nov 02, 2001 • Sunset Station, San Antonio, Texas, USA
Robert Guerrero WINS against Oscar Rosales by UD in Round 4 of 4
Win vs Javier Gonzalez 2-7-1
Sep 29, 2001 • Miccosukee Indian Gaming Resort, Miami, Florida, USA
Robert Guerrero WINS against Javier Gonzalez by TKO in Round 3 of 4
Win vs Alejandro Cruz 0-0-0
Apr 22, 2001 • Fantasy Springs Casino, Indio, California, USA
Robert Guerrero WINS against Alejandro Cruz by UD in Round 4 of 4
Boxing since the age of 9, Robert “The Ghost” Guerrero has earned world titles in two weight divisions (with interim titles in two other divisions). After taking a break from the sport in 2010 to help his wife successfully overcome leukemia, the southpaw returned to the ring to battle such notable opponents as Joel Casamayor, Andre Berto and Floyd Mayweather Jr.
Guerrero has proven himself to be both a valiant fighter inside the ring and an honorable man outside of it.
Much of that comes from having a father who helped shape not only his son’s life, but also his development into a world champion.
Ruben Guerrero Sr., a former amateur champion, introduced Robert and his five brothers to boxing as youngsters growing up in Gilroy, California.
Even early on, Robert Guerrero haunted opponents in the ring, and his elusiveness quickly earned him his nickname, “The Ghost.”
A natural star
Guerrero came out swinging from the start under his father’s guidance, embarking on a distinguished amateur career.
At age 15, he won a gold medal at the national Junior Olympics and was voted most outstanding fighter of the tournament.
The following year, Guerrero was the youngest competitor at the 2000 Olympic trials.
Although he didn’t make the team, the 16-year-old put on a good showing, losing to eventual Olympic bronze medalist Clarence Vinson, who was 21 years old.
Rather than remain an amateur in order to compete in the 2004 Olympics, Guerrero turned professional at the age of 18.
Winning his first world title
Guerrero went undefeated in his first 12 professional fights as a rising 126-pound prospect, including an eighth-round stoppage of former world champion Enrique Sanchez in June 2004.
He suffered his first loss against Gamaliel Diaz in December 2005, avenging the setback in a rematch with Diaz two fights later via a sixth-round knockout.
The win set Guerrero up with a September 2006 fight in Los Angeles against 126-pound champion Eric Aiken, who retired in his corner following the eighth round, giving Guerrero his first world title.
He relinquished his belt by losing to Orlando Salido in his next bout.
However, Salido tested positive for steroids following the fight in Las Vegas, and the result was changed to a no contest.
A champion at 130 pounds
Guerrero would waste no time in becoming champion once again, notching a ninth-round TKO of Spend Abazi in Frederiksberg, Denmark, in February 2007 to take home the vacant 126-pound belt.
He defended his title two more times—a first-round KO of Martin Honorio in November 2007, and an eighth-round KO of power puncher Jason Litzau in February 2008—before moving up to the 130-pound division.
In Guerrero’s second bout at 130 pounds, against Indonesian fighter Daud Yordan in March 2009, an accidental head butt opened a severe gash above his left eye.
The fight ended in a second-round no contest.
Guerrero claimed the 130-pound title later that year, winning a 12-round unanimous decision over Malcolm Klassen in Houston.
A different type of fight
In October 2007, Guerrero’s wife, Casey, was diagnosed with leukemia.
She relapsed three times over the next couple of years before being told in 2009 that she would need a bone marrow transplant to live.
Casey underwent the procedure in January 2010.
Guerrero vacated his world title the following month to help take care of his high school sweetheart, canceling a highly anticipated showdown with 135-pound titlist Michael Katsidis scheduled for March.
"It was going to be the fight of my career," Guerrero told the Los Angeles Times in July 2010. "I had to push it aside for the fight of my wife's life."
Thankfully, Casey has remained free of cancer since her bone marrow transplant, allowing Guerrero to refocus on his career.
Adding weight, adding belts
Moving up to 135 pounds upon his return to the ring later in the year, Guerrero notched wins against former world champion Joel Casamayor and 2004 U.S. Olympian Vincente Escobedo to close out 2010.
Guerrero finally got his shot against Katsidis in April 2011, and won an action-packed 12-round unanimous decision in Las Vegas to claim interim 135-pound titles.
Ready for any challenge
The southpaw would then jump up another two weights classes, defeating Selcuk Aydin in a 12-round unanimous decision in San Jose, California, in July 2012 for an interim 147-pound title.
Guerrero then battled former 147-pound champ Andre Berto in Ontario, California, in November 2012.
“Everything I've had to go through prepares you for this," Guerrero told the Los Angeles Times prior to the fight. "Winning this kind of fight—moving up in weight, taking the harder punches—has to do with character. Boxing is like Disneyland after what I've seen my wife go through."
Guerrero knocked Berto down in each of the first two rounds en route to winning a hard-fought 12-round unanimous decision.
The win would pave the way for the biggest fight in Guerrero’s career, a date with undefeated 147-pound champion Floyd Mayweather Jr. in Las Vegas in May 2013.
Guerrero, a 5-to-1 betting underdog, was never really able to penetrate Mayweather’s defense and lost a 12-round unanimous decision.
Back in action
After taking nearly a year off in the ring, Guerrero returned to action against Japanese fighter Yoshihiro Kamegai Carson, California, in June 2014.
The bout was one of the year’s best, and Guerrero won the bloody contest in a 12-round unanimous decision.
According to CompuBox, the two fighters combined to throw more than 1,900 punches.
Going down swinging in his PBC debut
On March 7, 2015, Guerrero fought undefeated Keith Thurman in a 147-pound bout as part of the first Premier Boxing Champions card, which aired in prime time on NBC.
Fighting at the MGM Grand Garden Arena in Las Vegas, Guerrero dropped a 12-round unanimous decision but earned plenty of respect when he continually pressured Thurman in the late rounds after being knocked down in the ninth.
It was the second time in Guerrero's career that he had been dropped, but his valiant comeback against such a strong opponent won him widespread praise.
Rallying for victory
Guerrero made a quick return to the ring, taking on Aron Martinez at the StubHub Center in Carson, California, on June 6, 2015, in the headlining bout on a PBC on NBC afternoon broadcast.
Guerrero started slowly against Martinez, fighting often with his back against the ropes, and was knocked to the canvas toward the end of the fourth round by a quick flurry from Martinez.
Midway through the 10-round fight, Guerrero became more aggressive and picked up the pace, using his jab to keep Martinez at bay.
Guerrero continued to wear down Martinez as the fight progressed and ended up victorious by split decision, winning the final five rounds on all three judges' scorecards to earn the decision.