Retired NFL great, Herschel Walker, made his MMA (mixed martial arts) debut on Saturday (January 30), and it ended in victory.

Walker was on the undercard of Strikeforce's Miami event on Saturday, where he began his MMA career with a "W" after scoring a third-round TKO of Hungarian fighter Greg Nagy.

"The experience was exciting," Walker said after the fight. "First, let me thank my opponent for giving me the opportunity to fight him because it's tough to fight an old man. ... This is the hardest thing I've ever done."

According to MMAFighting.com, Nagy was not really known before Saturday. Prior to the fight, he had a professional MMA record of just 1-1. He was smaller and a little pudgy compared to a very in-shape Walker. To his defense, Walker is still 47 years old, but it was clear, he had the athletic advantage.

Here's a little rundown of the fight, told by MMAFighting.com:

Walker landed a hard left jab to Nagy's face in the opening seconds of the fight, and then he landed a couple of hard kicks to Nagy's leg. With one more hard kick to Nagy's body, Walker, a tae kwon do black belt, knew he had his opponent hurt and took him to the ground. At that point, Walker looked like he might win by first-round TKO.

Unfortunately, Walker has what MMA enthusiasts would consider fairly rudimentary ground fighting skills, and even though he did manage to control Nagy on the ground and land several punches to Nagy's face as the crowd chanted "Herschel! Herschel! Herschel!" he wasn't able to finish the fight.

After a while on the ground, Nagy managed to tie Walker up and at one point even appeared to have Walker in trouble on the ground, attempting a leg lock submission that an inexperienced fighter like Walker was likely unaccustomed to. But Walker managed to pull his leg free, stay on top of Nagy and continue to control him. The bell sounded to end the first round with Walker on top, having dominated the first round.

At the start of the second round Nagy landed a jab to Walker's face and went on the attack, but when they clinched, Walker picked Nagy up and slammed him to the ground. Once Walker got Nagy down he demonstrated how green he was by achieving a dominant position only to allow Nagy to break free. The fans continued to cheer Walker, although they also seemed to be growing impatient with his inability to finish Nagy. By the end of the second round a few fans were booing, even as Walker continued to dominate.

Nagy started the third round by hitting Walker in the head with a hard right hook, but Walker took it in stride and took Nagy down to the ground. At that point the crowd began to boo again, as the fight was turning into more of a marathon than a sprint.

Walker could have simply stayed on top of Nagy and won a decision, but he kept punching, and finally, after he landed a series of unanswered punches from on top of Nagy, the referee stepped in and stopped the fight, giving Walker a third-round TKO victory.

Walker donated his entire winnings to charity, as he said when he announced the fight back in December.

The retired NFL great was a 1982 Heisman Trophy winner while at Georgia, before playing professionally for Dallas, Minnesota, the New York Giants and the USFL's New Jersey Generals. He retired after the 1997 season.

Late last year, he became focused on MMA. He was already a fifth-degree black belt in tae kwon do, before moving to San Jose to train at the American Kickboxing Academy. He prepared for his debut by practicing against Jon Fitch and Cain Velasquez, who he credits for his win.

Also on the card was women's champ, Cris Cyborg, who defended her title against Marloes Coenen, Nick Diaz defeated Marius Zaromskis, Robbie Lawler earned a win over Melvin Manhoef, and Bobby Lashley beat Wes Sims.