Originally written on The Queensbury Rules  |  Last updated 10/28/14

We finally got a definitive outcome in the rivalry between Manny Pacquiao and Juan Manuel Marquez Saturday night on HBO pay-per-view, and in a way that rocks the sport of boxing to its core: Marquez knocked Pacquiao, one of boxing's two biggest stars, out cold in the 6th round. It had been a thrilling back-and-forth bout prior to that, one where both men traded knockdowns. If anyone was thought to be able to render a conclusive end to this bout, it was predicted that it would be Pacquiao, as he was the man who's been living at welterweight for a while and has always been the bigger puncher of the two, while Marquez has only flirted with the division. In the first two rounds, it looked very much like Pacquiao was the one who had come out with the better focus and better game plan -- head movement, feints, using his legs to fire and get out. But in the 3rd, Marquez, who had been investing in body punches, feinted with a left to the body and then caught Pacquiao with a looping overhand right that legitimately dropped Pacquiao for the first time in many years. Pacquiao recovered, though, both psychologically and physically, in the very next round, and by the 5th he gave Marquez a knockdown of his own, and a more damaging one, and after rising from that straight left, Marquez foolishly traded with Pacquiao until the bell rang in one of the best rounds of 2012. Everything seemed to be going Pacquiao's way in the 6th, too, until the final seconds: Pacquiao lunged forward, and Marquez, who was crouching down, thrust forward a full-force, crunching, perfect right hand that caught Pacquiao as precisely as you can catch someone. Pacquiao landed flat on his face, unconscious, and frighteningly so; I was legitimately worried that he was dead. There might be a rematch, but this is the kind of knockout loss that Pacquiao has delivered in the past, the career-ending kind against Ricky Hatton. If it's the end of the road for Pacquiao, he really does go down as THE fighter of this era who has the best resume. If he rebounds from this, somehow, it will be impressive enough, but Pacquiao has enough going for himself as a politician in the Philippines that he ought to consider ending on this note and moving on to the next phase of his life. If Pacquiao is through, then we're at the end of a period in boxing where he has been one of the sport's signature stars. It certainly kills the viability of the mega-fight with the other signature star of this era, Floyd Mayweather. Marquez finally gets that win that has eluded him after three previous meetings with Pacquiao. Given his association with controversial strength and conditioning coach Angel Heredia, and his cut physique at age 39, there will be those who will chalk up this victory to performance enhancing drugs. There is no proof of any malfeasance, though, and until then all anyone has is suspicion, reasonable or no. What we do know is this: Marquez scored a career-defining win in a knockout for the ages, what will go down as one of the most memorable and meaningful KOs in the sport's history.

MORE FROM YARDBARKER

How the Panthers upset the Seahawks

2015 Hall of Fame inductees announced

Jameis Winston won't decide on future until after title game

Oregon center: Ohio State won't 'quit' like Florida State

Packers safety says team won't 'freak out' over Dez Bryant

Stafford missed open Johnson on pass interference play

LIKE WHAT YOU SEE?
GET THE DAILY NEWSLETTER:

Report: LSU another possible destination for Braxton Miller

Dion Waiters believes he is better than Kyrie Irving

Wade Phillips to be Redskins defensive coordinator?

Maple Leafs fire head coach Randy Carlyle after latest skid

Junior Seau's family lashes out at NFL

Winners and losers of the Dion Waiters trade

Jerry Jones: Governor Christie is part of our mojo

NHL to place tracking chips in uniforms at All-Star Game

Ohio town changes name to honor Urban Meyer

Ranking the NFL teams eligible for 'Hard Knocks' next year

Ryan Howard will accept trade to nine teams

College football bowl season's biggest losers

Belichick: Differences between 2012, 2014 Ravens

Understanding the UFC antitrust lawsuit

Matthew Stafford’s fiancee takes shot at refs on Instagram

Buckeyes, Harbaugh to return Big Ten to national prominence?

There’s no conspiracy to help the Dallas Cowboys

What happened to the mighty SEC West?

Boxing News
Delivered to your inbox
You'll also receive Yardbarker's daily Top 10, featuring the best sports stories from around the web. Customize your newsletter to get articles on your favorite sports and teams. And the best part? It's free!

By clicking "Sign Me Up", you have read and agreed to the Fox Sports Digital Privacy Policy and Terms of Use. You can opt out at any time. For more information, please see our Privacy Policy.

Ranking potential 'Hard Knocks' teams

Oregon vs. Ohio St.: The names to know

What happened to the SEC West?

Tyson confronted Jordan over Robin Givens

McIlroy reportedly dating PGA employee?

Vinatieri randomly drug tested day after 53-yd FG

UNC wearing "STU" patches to honor Stuart Scott

Lions player: Penalty reversal is 'shady'

Report: Manziel had run-in with hecklers

NFL head official: Cowboys should have been flagged

Scott's best 'This is SportsCenter' ads

Reasons why Ohio St. will beat Oregon

Today's Best Stuff
For Bloggers

Join the Yardbarker Network for more promotion, traffic, and money.

Company Info
Help
What is Yardbarker?

Yardbarker is the largest network of sports blogs and pro athlete blogs on the web. This site is the hub of the Yardbarker Network, where our editors and algorithms curate the best sports content from our network and beyond.