Errol Spence Jr. wouldn't change a thing about Olympic experience

Four years ago, welterweight contender Errol Spence Jr. was the most successful of the American men's boxers at the London Olympics.

But success is all relative. While Spence reached the quarterfinals, the men's boxing team earned its place as the worst in American history, failing to win a single medal for the first time.

Still, Spence, the 2015 ESPN.com prospect of the year, enjoyed his Olympic experience.

"I'll never forget meeting all of the athletes that I had grown up watching," Spence said. "I got to meet Kobe Bryant, LeBron James, the Williams sisters [Venus and Serena] and Usain Bolt. Just being able to talk to them and be around them was amazing. I was an Olympian just like them.

"It was a big moment for me when people like that would recognize me and tell me they were going to come watch me fight. That's something I'll always remember."

Those are great memories for the 26-year-old from DeSoto, Texas, but he is aiming to make more for himself as a professional as he heads into the most significant bout of his career.

Spence (20-0, 17 KOs) can earn a mandatory world title shot with a win against Leonard Bundu (33-1-2, 12 KOs), 41, of Italy, in their elimination fight on Sunday at Ford Amphitheater at Coney Island Boardwalk in Brooklyn, New York. The stand-alone Premier Boxing Champions match will air on NBC at approximately 5 p.m. ET -- immediately following the conclusion of the gold-medal game in men's basketball at the Rio de Janeiro Olympics.

"People ask if I'm nervous about headlining big fights, but I've already fought on the biggest stage you can fight on at the Olympics," Spence said. "I was fighting in front of the whole world, and it got me ready for where I'm at today."

The winner of Spence-Bundu will earn a crack at the welterweight belt held by England's Kell Brook, although it seems doubtful that Brook will ever see 147 pounds again. He is moving up to middleweight for a shot at unified titleholder Gennady Golovkin on Sept. 10. If Brook ultimately relinquishes the belt, Sunday's winner will fight for the vacant title.

On the doorstep of a title shot, Spence said he would not change anything about what happened during his run at the 2012 Olympics even though he did not accomplish his goal of winning a medal.

"I feel like everything happens for a reason," he said. "If I go back and change something, it might change something in my future. So far my future is looking great right now. I'm one of the top fighters in the game and everything that happened in the Olympics led to that."

The 2016 U.S. Olympic team has won at least two medals, and Spence wished the fighters still competing good luck.

"I would tell the Olympians to stay focused no matter what happens," Spence said. "Work with what you have there, listen to your coaches and stay 100 percent dedicated. You got this far, so why slack now?

"I wish them the best of luck, and I think we definitely have some gold-medal hopefuls like Shakur Stevenson and Claressa Shields. They're going to come home with gold and it's going to be big for U.S boxing."