He moved up and earned a lot...

After fighting in the flyweight, he moved up 4 times, won 8 and defended the titles once along the way. Nathan faced his fellow countrymen Manny Pacquiao on a welterweight showdown in MGM Grand Garden Arena, Nevada, USA on Feb. 24, 2014.

(Here are the sponsors for this fight, while at ring side the three judges scoring this on ten point must system are Adaley Byrd, John Cane and Steve Wiess. The man in-charge after the bell rings is referee Kenny Bayless. Now, for the thousands in attendance and millions around the world and let's get ready to rumble!!!) The crowd is really hyped up for this fight and in Philippines streets were empty like a ghost town as they watched the fight in their house, bars, gymnasium and etc.

(Your main event of the evening with twelve rounds in the welterweight division, for WBA, IBF & WBO welterweight title of the world.) Michael Buffer said.

(Standing with Coach Freddie Roach in the red corner blue wearing grey, officially weighing 147 pounds and his pro record of 60 fights, 54 victories including 38 KO's, 4 defeats and 2 draws. From Sarangani, Philippines, the 8 divisions, 10 times world champion Manny "Pacman" Pacquiao!!!) Michael Buffer paused for a while to clear his throat and continued.

(Standing in the blue corner blue wearing red, blue and white, officially weighing 147 pounds and his pro record of 21 contest, 21 wins including 21 KO's, and no defeat. He's 7 divisions world champion, unbeaten and defending WBA, IBF & WBO welterweight of the world From Manila, Philippines, Nathan "D Monster" Walker!!!) Michael Buffer said.

(Any punch here is considered clean. We talked over the rules in your dressing rooms earlier this fight. I want you to keep this fight clean, protect yourself at all times and when I say you must obey. Good luck, touch'em up and return to your corners) Ref. Kenny Bayless said.

The two went in their respective corners; Ref. Kenny Bayless pushed Manny back when he wanted come out to the center of the ring and the bell rings (Ding!!!)

(Pacman 3x) the crowd shouted Manny's moniker; Nathan landed several body shots and (Boom!!!) Manny went down the canvass via 2 hard right hooks to the head by Nathan.

(5, 6, 7, 8... you're okay, Manny?) Ref. Kenny Bayless asked and Manny nodded to him. Pacman fought back aggressively, while Nathan used stiff jabs, quick footwork and counters to put Manny away until last 10 seconds.

(Pak!!! 3x) Manny went inside with his left jab; Nathan nailed him via a right straight and Pacman is knocked down for second time in the fight.

(Ooh! that's another knocked down and he's not getting up) 1st commentator said.

( Manny's been knocked out cold, a sensational right hand and still no sweat Nathan "D Monster" Walker) 2nd commentator said.

(Manny is faced down in the canvass, as always Nathan is kneeling down beside his opponent and along with the ringside physician) 1st commentator said and Nathan used (High heal) on him. Manny sat in his corner, he congratulated Nathan and both them hugged each other

(The winner by knockout victory and still WBA, IBF & WBO welterweight of the world From Manila, Philippines, Nathan "D Monster" Walker!!!) Ref Kenny Bayless raise his hand and the commentators asked him several questions.

He gave Pacman's sixth loss, fourth defeat via KO and Nathan earned the WBO welterweight title. Manny started with a right straight to the head, Nathan countered with a left hook and neither fighter landed a punch.

(Congratulations on defending your welterweight title belts. Do you feel that Manny's vulnerable into the right hands that knock him down twice?) Commentator asked.

(I would thank God first, my family and fans for their support. No 3x, I just saw an opening and lucky to land those right hand shots) Nathan replied.

(Pacman came out aggressively, did you sense to be patient and him?) Commentator asked.

(I know he's gonna come aggressive in the fight so I waited for him to counter and I able to hit him with power shots) Nathan replied.

(When you knock him down the first time, did you think that you're the stronger guy in the ring?) Commentator asked.

(I didn't thought I'm stronger than him since I knew he's a dangerous and difficult opponent) Nathan replied.

(Do you want or expect a second fight with Manny?) Commentator asked.

(I'm open for a second one before I decided to retire from fighting. Mabuhay ang Pilipinas at si Manny/ Hurray for Philippines and long live Manny) Nathan replied.

(Thank you for a great fight and last my question is who'll be your next opponent, Nathan?) Commentator asked.

(I saw Floyd Mayweather Jr. earlier, if he's interested to fight me and earn more cash. I want him for my next fight in the ring) Nathan said.

(I would like to see that fight happen and be commentator on it, Nathan) Commentator asked.

Floyd Mayweather Jr. heard his name and saw his face in the big screen. He immediately went up in the ring, congratulated and shook hands with Nathan.

(Nathan mentioned your name and would like to fight you. What's your response, Floyd?) Commentator asked.

(Let's make this fight happen for the people and for the fans, Nate.) Floyd Mayweather Jr. replied.

(Let's talk later, Floyd) after the fight, they held a post-fight conference in the MGM hotel and casino.

The Pacquiao vs. Walker fight was sold more than ten million pay-per-view buys around the world while 5 million of it is in the United States, earning over and ticket sales of $74 million from over 20 thousand tickets sold.

The fight broke PPV viewership records in the United States, surpassing the previous $150 million revenue record set by Floyd Mayweather vs. Saúl Álvarez, the 2.48 million buy record set by 2007's Oscar De La Hoya vs. Floyd Mayweather Jr., and a pre-fight estimate of $800 million from 10 million households. In the Philippines, the ratings estimated that the fight was watched across the three-network is 66.9% of Filipino households; one of the three networks simulcasting the fight, ABS-CBN had the largest number of viewers, with a rating share of 31%.

Nathan earned over $500 million from sponsors, revenue share and $ 10 million cash purse.

To be continued...