Julio Cesar Chavez knew he was not the same man he used to be. Gone was the quickness, the head movement, and the killer instinct that has made him a hero in Mexico.

But for one night, Chavez mustered up enough energy to give fight fans a glimpse of the man who will one day enter the Hall of Fame as one of the greatest fighters to come from Mexico.

Chavez did receive the loudest cheers from 17, 692 in attendance at STAPLES Center in Los Angeles when the vintage Chavez dropped Ivan Robinson onto the canvas in the fourth round, settling for a unanimous decision victory over 10 rounds of action.

The bout headlined a 10-fight "Adios" card, presented by Top Rank Promotions.

Fighting for what many believed was the last time, Chavez nearly filled STAPLES Center to capacity in anticipation of receiving the greatest thrill of watching Chavez work his magic in the ring like he has done so many times.

Fight fans did see that and a tremendous effort from Robinson, who did come to fight and not just earn a paycheck for efforts.

In what many people saw was an easy fight for Chavez was undone by Robinson in the second round. The faded fighter who defeated Arturo Gatti showed quickness in the second round, landing a series of combinations.

However, Chavez was able to thwart any offense by landing thudding body shots that could be heard in press area.

Chavez looked to end matters in the fourth when he floored Robinson with a right hand to the face. Robinson was on his back, but got up and fought on.

Robinson had problems in the middle rounds keeping his mouthpiece where it should have been; in his mouth. Courtesy of fatigue and a series of hooks to the face, Robinson had his mouthpiece end up on the floor, which referee Raul Caiz took a point away in the seventh round.

Chavez stalked Robinson around the ring for most of the fight. He pursued Robinson, landing the trademark left hook to the body. It looked as though Robinson was going to teeter towards the canvas.

Even though he was a beaten man, Robinson was game and connected punches against the great champion in Chavez. Robinson was eager to trade at times and land punches, marking up Chavez work and aged face.

Both fighters brought the crowd to their feet when they decided to trade combinations and punches in the last round.

All three judges scored the bout in favor of Chavez, 99-90, 99-90, and 100-89. Fightnews.com scored the bout 99-90 for Chavez.

Afterward, Chavez addressed the crowd and thanked them for their years of loyal support to him.

"I want to thank you for all of the support that you have given me throughout the years," said Chavez, who won his first title in Los Angeles in 1984. "I hope that you give my son the same support you have given me throughout the years."

Regarding the fight, Chavez gave praise to Robinson for a good fight. Robinson looked in awe at Chavez, applauding him and bowing before him during the ring introductions.

"Someone said that this was going to be a easy fight. It was not. Robinson is a good fighter. I hurt my hand during the fight and I was not able to give the fight fans a better show."

Chavez, from Culiacan, Sinaloa, Mexico, improved to 107-5-2, 88 KO's Robinson, from Philadelphia, PA, drops to 32-10-2, 12 KO's.