Boxing superstars Floyd Mayweather Jr. and Manny Pacquiao were able to produce the most profitable pay-per-view in history on May 2, due mainly to their broad name recognition. While they are the best boxers in their weight class, they aren’t the only welterweights that rank among the best fighters in the entire sport.

The welterweight division is home to some of the world’s best boxers, regardless of weight class. Champs in other divisions stand out, as well, and some of the top boxers could soon be fighting at new weights to create exciting fights.

There is a better understanding of which boxers should be considered in the top 10, since the sport’s best fighters have already been in the ring for the first half of the year. A new round of bouts are set for the second half of 2015.

Below is a top 10 list of boxing’s best pound-for-pound fighters in 2015.

1) Floyd Mayweather: 48-0-0 (26 KOs), welterweight He’s never lost and has beaten all of the best boxers in his era, making Mayweather the clear No.1. 

2) Roman Gonzalez: 43-0-0 (37 KOs), flyweight The undefeated fighter doesn’t even give his opponents a chance, ending 14 of his last 15 fights before the 10th round. The Nicaraguan has plenty left at age 28.

3) Gennady Golovkin: 33-0-0 (30 KOs), middleweight GGG is unbeaten with 20 consecutive knockouts, and the only reason that he hasn’t defeated a top fighter is because none of them want to face him. The 33-year-old looks unstoppable at the moment.

4) Andre Ward: 28-0-0 (15 KOs), super middleweight Despite his inactivity in 2014, Ward is one of the sport’s best fighters, and he’s been so dominant at the super middleweight level that he’ll soon need to fight someone from another weight class.

5) Manny Pacquiao: 57-6-2 (38 KOs), welterweight There’s no shame in losing to Mayweather, and Pacquiao should have three wins against boxers on this list. He won't be fighting in 2015 due to injury, but expect the 36-year-old to finish his career strong.

6) Wladimir Klitschko: 64-3-0 (54 KOs), heavyweight The famed Ukranian is clearly the best heavyweight, and there might not be anyone in the division who could pose a serious challenge. He might receive a test from Tyson Fury on Oct. 24, but don't expect an upset.

7) Sergey Kovalev: 27-0-1 (23 KOs), light heavyweight The Russian has dominated the light heavyweight division, and Bernard Hopkins is the only boxer to last more than eight rounds with Kovalev in his last 16 fights.

8) Miguel Cotto: 40-4-0 (33 KOs), middleweight He’s been rejuvenated since teaming up with Freddie Roach, but Canelo Alvarez could take this spot if Cotto has a bad showing in their November fight. Cotto is among the most savvy fighters in boxing.

9) Guillermo Rigondeaux: 15-0-0 (10 KOs), super bantamweight The two-time Olympic gold medal winner doesn’t have nearly as many professional fights anyone else on the list and he hasn’t fought in 2015, but he’s been dominating opponents for five years and has the skills to keep climbing.

10) Keith Thurman: 26-0-0 (22 KOs), welterweight With knockouts in all but four of his victories, Thurman could be the sport’s next top star once he gets his shot at a top fighter in his weight class. He's only 26 and already shows a great deal of maturity.