By Salvador Rodriguez

Making a final decision on the future of his boxing career will not be easy, says Juan Manuel Marquez.

Prior to last Saturday's fourth fight with Manny Pacquiao, Marquez promised his wife and children that he would retire regardless of the outcome.

Marquez secured the most impressive win of his entire career, when he knocked out Pacquiao with a right hook in the sixth round.

"It's the hardest decision of my life. I want to be calm, enjoy my family and make the best decision. Just yesterday I got home and told my wife: 'Hey, baby, one more fight,' and she said,'no, you left off that you were going to retire,' and yes I said [to her] that regardless of the outcome I was going to etire, but we'll see," Marquez said.

"Everything seems to be rosy, but we'll see what happens. I would love to fight at Estadio Azteca... it is a dream that many would like to achieve and maybe I will have the opportunity or maybe a fifth title win. It was a very difficult fight on Saturday, six rounds of fire, dangerous, severe punches, but logically we know that all the money in the world you can not buy another life, and it can not buy you another brain."

"I do not want to end up like other fighters have. I not to want to be part of that experience. I would retire as I am right now, physically and mentally well. I wanted to show who was who, I could not retire without proving who was better, and it was proven on December 8. If I [retire], I would be satisfied."

Salvador Rodriguez covers boxing in Mexico for The Record and BoxingScene.com.