Fighting out of Brooklyn, New York, nine-time world champion Amanda Serrano has left a trail of devastation in every weight class she has chosen to set up camp in.
The Puerto Rican channels her tough Brooklyn roots, with impressive showings in Mixed Martial Arts events and has a professional wrestling record. There is no doubt she is a natural fighter. But it is her breath-taking boxing record which has earned her claim to fame.
"The Real Deal" has stepped through the ropes 44 times in her 11-year career, winning 40 and only losing twice with an impressive 30 knockouts. Serrano lost a split-decision verdict to Katie Taylor on the weekend although many felt she did enough to get the nod.
They were the first two women to headline Madison Square Garden in its entire history, dating back to 1882.
In just over a decade, Serrano has defeated nine world champions and held belts in seven different divisions, from super flyweight to light welterweight.
Her ability to manipulate her body weight to dip in and out of weight classes shows just how much of an incredible professional Serrano really is.
When a fighter is grabbing belts at the same rate most people get haircuts, it is no wonder the 33-year-old is considered as the greatest female boxer of all-time.
With women's boxing thriving, Planet Sport has decided to remind people of Serrano's belt-littered career.
IBF super featherweight title - 2011
In 2011, Serrano went toe to toe with Kimberly Connor, who had not lost a fight in seven years. The icon put Connor down twice in the second round before the referee brought a stoppage to proceedings and crowned Serrano the winner of the inaugural title.
UBF and WIBA featherweight titles - 2013
After suffering the only defeat of her career to Frida Wallberg, Serrano made her first weight change as she dropped down to 126-pounds. It proved to be the right decision for Serrano, who knocked out Wanda Pena Ozuna for the vacant UBF and IBA Featherweight titles.
WBO lightweight title - 2014
Serrano found herself fighting fellow South American Maria Maderna at the 135-pound mark in 2014, in what was her hardest test to date in her opponent's homeland.
In just six, two minute rounds, Serrano disposed of the previously undefeated Argentinian with an explosive right hook ending proceedings.
WBO featherweight - 2016
Serrano signed for Lou DiBella entertainment in January 2016 and capped this off with a first-round demolition of Canadian Gerula to win the vacant WBO featherweight belt in February.
WBO featherweight title - 2016
The next boxer to feel the wrath of the Puerto Rican powerhouse was Alexandra Lazar for the WBO junior featherweight strap.
The fight lasted a mere 44 seconds as Lazar was introduced to her famous right hook. Serrano became the second ever Puerto Rican boxer after Miguel Cotto to win a belt in four different weight classes.
First female bout televised in a decade - 2017
Serrano retained her WBO junior featherweight world title with a unanimous decision victory against Yazmin Rivas, adding the WBC Diamond belt to her mantelpiece in the process.
It was the first English-language women's fight to be televised in the United States since 2007. Serrano earned $17,500 for her win.
WBO bantamweight title - 2017
Dahiana Santana was the next victim.
Fighting in front of the Brooklyn faithful, Serrano extended her knockout streak by ending the contest inside eight rounds and won the WBO bantamweight crown.
The pair would meet in a rematch but not in boxing, in MMA for popular Hispanic company Combate Americas.
WBO light welterweight title - 2019
Serrano waited two years to snatch her next belt, moving up to 140-pounds to snare the WBO junior welterweight belt from Yamila Esther Reynoso. This win put Serrano's name in the history books as the first woman to win belts in six weight categories. Reynoso in a historic battle which Serrano won by unanimous decision.
WBO junior bantamweight - 2019
Ten years on from her pro debut, Serrano somehow fought at the junior bantamweight limit of 115-pounds to overcome Eva Voraburger.
Serrano wasted no time in front of the bright lights at Madison Square Garden, inflicting defeat inside 35 seconds of the opening round to add even more history by becoming just the second fighter after Manny Pacquiao to win world titles in seven divisions.
WBO and WBC interim featherweight titles - 2019
Serrano dominated Heather Hardy in what was a one-horse race to take the WBO and interim WBC Featherweight straps by a points decision in what was a typical Brooklyn brawl.
Serrano has since racked up wins Simone Aparecida Da Silva, Dahiana Santana and Daniela Romina Bermudez.
While Taylor and Claressa Shields are seen as the faces of women boxing, it is important to remember Serrano, 33, could very well be regarded as the greatest female fighter of all-time.