WBC light heavyweight champion Adonis Stevenson has defended his title eight times in the past.

This Saturday night vs. Badou Jack, “Superman” might be facing his stiffest test to date.

Stevenson-Jack headline part of the split-site Showtime card from the Air Canada Centre in Toronto. Gary Russell Jr. and Joseph Diaz headline the MGM National Harbor card in Maryland.

“Badou is a two-time world champion for a reason,” Stevenson said. “I’m not underestimating him. I know he’s durable and that he has attributes like good head movement and I’ll have to be ready for everything.

“Every fight is a big fight for me. This fight is nothing different. Badou Jack is a good fighter and people think very highly of him. But in my mind, he’s just the next guy that I have to beat.”

Each of Stevenson’s last three defenses have been finishes, including a second round TKO vs. Andrzej Fonfara last June. He is unbeaten since a 2010 loss to Darnell Boone.

“I’m always going for the knockout,” said Stevenson. “I’m still ready for 12 rounds, but I want the stoppage every time. I’m hungry for knockouts. If Badou comes in aggressive, this could end very quickly.

“You have to step into the ring with me to understand my power. If I connect right just one time, that’s it, lights out. We train specifically for knockouts. You’ll have to wait and see how I do it on May 19.”

As the longest-reigning champion at 175-pounds, and the second longest-reigning champion in boxing, Stevenson has established his case as the best fighter in the division, something he looks to continue to prove on May 19.

“I’m the king at light heavyweight,” said Stevenson. “I beat the king to become the king. I know that I’ve accomplished some great things and me and my team plan to continue to do everything we can to stay on top.

“I’m the best fighter in this division, period. When I win on May 19, I’ll just be doing my job. People might still talk trash, but I’ll still be the champ.”