Following a year dominated by Floyd Mayweather, much has changed in the sport's hierarchy less than six months later. While Manny Pacquiao successfully returned to the ring following a short retirement stint, his days as a top pound-for-pound great are firmly behind him. Instead, a handful of notable pugilists will take his place on the Sports on Earth pound-for-pound list featured below (we consider Mayweather currently retired, so we did not include him here).

1. Gennady Golovkin

Arguably the most ferocious boxer on this list, Gennady Gennadyevich Golovkin (simplified to GGG) is in our No. 1 slot for boxing's pound-for-pound rankings after his unanimous decision over Daniel Jacobs on Saturday night. While some already consider him the best boxer on the planet, he has yet to face elite competition like a Canelo Alvarez to cement his claim and silence critics -- though many challengers may see some weakness in him now that Jacobs ended GGG's knockout streak at 24 outings. Despite the questions surrounding his resume, the Kazakh native is undeniably one of the most dangerous fighters active today. He is also considered the top middleweight fighter and holds world titles by three of the four major boxing sanctioning bodies.

2. Román González

What happened? Endearingly known as Chocolatito, González had maintained his spot atop the P4P rankings lists for several years, but Saturday's shocking loss to Srikaset Sor Rungvisa of Thailand certainly knocked him down a peg. González is the first Nicaraguan to win world titles in four different weight classes, most recently against Carlos Cuadras to claim the WBC super flyweight title. While boxers like Mayweather and others commanded the highest paydays and headlined the biggest shows, González quietly amassed one of the best records in boxing history, and did so while being placed in the co-main event slot. But Rungvisa got the decision off him on Saturday at Madison Square Garden in a bloody battle. After the bout was over, González said he wants an "immediate rematch."

3. Terence Crawford

Over the past couple of years, Crawford has continued to bolster his reputation among fans and pundits alike. In 2015, he was voted as Fighter of the Year by the Boxing Writers of America and ESPN, and followed that up by becoming a two-weight world champion in 2016 when he captured various light-welterweight titles. He holds an unblemished 30-0 record, which includes 21 knockouts.

4. Andre Ward

Despite a victory against Sergey Kovalev in his most recent outing, Ward's performance during that fight does not help his case as one of the top 3 P4P boxers in the sport. After being knocked down in the second round, Ward recovered to win a controversial unanimous decision, which even prompted commentator Larry Merchant to refer to it as a "classic hometown decision." However, Ward's victory still placed him ahead of Kovalev as the No. 1 light-heavyweight boxer.   

5. Sergey Kovalev

Talented Russian light-heavyweight Kovalev occupied the No. 2 spot in the pound-for-pound list until the first defeat in his professional career, which took place against Andre Ward last November. Since the controversial defeat where Kovalev lost his WBA (Undisputed), IBF, and WBO light heavyweight titles, the Yekaterinburg native also surrendered the top ranking spot to his American adversary.

6. Vasyl Lomachenko

Once considered a top prospect in 2013, WBO super-featherweight champion Lomachenko has since flourished into a rising star in the boxing scene. The two-time Olympic gold medalist is Ukraine's top boxing export who most recently defended his WBO junior lightweight title to advance to a 7-1 record. While still relatively inexperienced in comparison to the others featured in the Top 5 of this list, he actually won the vacant WBO featherweight title in his third professional fight.

7. Canelo Alvarez

After being considered boxing's heir-apparent to Floyd Mayweather just over a year ago, Alvarez is no longer even the top fighter in his own division. This is mainly due to GGG dominating the weight class by collecting the majority of the major titles. Alvarez, who still occupies the WBC, The Ring, and lineal middleweight titles, has faced some questionable opposition in his last two fights, including a much smaller Amir Khan and Liam Smith. Until Alvarez accepts a fight against Golovkin, he is unlikely to be featured in a much higher ranking spot. 

8. Manny Pacquiao

Pacquiao successfully returned to the boxing ring several months ago despite announcing his retirement after defeating Timothy Bradley less than a year ago. Though currently serving as a senator in the Philippines, it appears that Pacquiao will continue to fight in the near future, as he currently holds the WBO International and lineal welterweight titles as well as the WBO welterweight title he won after beating Jessie Vargas last November. Despite his triumphant return, the fight did not garner much attention. With talks of a potential Amir Khan fight down the road, it is unlikely that Pacquiao will climb any higher in the pound-for-pound rankings.

9. Guillermo Rigondeaux

Considered the top super-bantamweight in the world, two-time Olympic gold medalist Rigondeaux has been a staple in the P4P rankings for over a year. Undefeated with a 17-0 record that includes 11 knockouts, pundits and experts expect Rigondeaux to be just as successful in his professional career, as he was during his amateur career. During that time, Rigondeaux compiled a 475-12 record that had many hailing him as the greatest amateur fighter of all time. Time will tell if he can live up to that mantle as a professional.

10. Keith Thurman

With an undefeated record and one of the hardest right hands in boxing, Thurman is one of the top American boxers on the planet. Serving as the unified welterweight champion, the 28-0 fighter is one of the more touted boxers to make the p4p list. His wins over Dany Garcia and Shawn Porter in the past 12 months ensure that he is certainly on the right path to proving all the experts right.