And so ended the first fight of Gutierrez's pro career.
At first, Gutierrez said he didn't realize the margin by which he had won. But after looking for his opponent backstage to shake hands, a mildly-bruised Gutierrez discovered just how severe of a beating Chau had sustained.
"I didn't really notice it after the fight, because they cleaned him up," he said. "But after the fight, I was going to tell him 'Good job,' and we couldn't find him. We found him backstage and he was throwing up and had two cuts on him. His nose and lip were bleeding.
"I told him 'Good job,' but he was on the ground throwing up, so he just kind of put his hand up [to pound fists]. But he was pretty tough. He didn't want to stop. It was probably a good decision by the judge."
Gutierrez's father, Johnny, said he was proud of the way his son handled his first pro fight.
"The crowd was loud, but he did well," he said. "If [Chau] just went toward him without even hitting him, the crowd would go crazy. I wasn't ever really worried, per se. My only concern was how the judges would react. The kid was tough."
The younger Gutierrez said he knows there were things in his fight he didn't do well, but he intends to take the experience and learn from it and improve.
After collecting his winnings and other earnings from sponsorships, Gutierrez said he came away with between $1,000 and $1,500. It's a small step toward making a living off of the sport, but Gutierrez said he knows money and sponsors will continue to come if he continues to win.