Anthony Joshua, left, puts his IBF heavyweight crown up against Eric Molina Saturday in Manchester, England. Reuters

Three championship belts could change hands on two continents, as two elite boxers defend their titles. In the United Kingdom, promising young British heavyweight Anthony Joshua defends his IBF heavyweight title in Manchester, England, against undefeated Eric Molina, while across the Atlantic, superstar junior welterweight champion Terence Crawford squares off against challenger John Molina Jr. in Omaha, Nebraska.

Crawford (29-0, 20 KOs), among the best pound-for-pound boxers in the world, seeks his third victory of 2016 and a sixth consecutive title defense to further cement his already lofty status in the sport.

But the 29-year-old must first go through Molina (29-6, 23 KOs), who’s earned the nickname “The Gladiator” for good reasons. Molina, 33, most recently held off hard-hitting Ruslan Provodnikov of Russia in a unanimous decision in June and went the distance in a decision defeat to Adrien Broner in 2015.

Crawford, though, doesn’t seem too worried.

"I did a number on Hank Lundy, the kind that nobody else was able to do," Crawford told ESPN. "I unified the title against [Viktor] Postol, a guy everybody said was almost as good as I was. I am an undefeated champion and was fighting a guy [Postol] coming off a knockout win against [Lucas] Matthysse and I totally dominated him.

"Now I'm fighting another guy coming off an impressive win, a No. 1 contender, and a win over him should convince people that I am fighter of the year."

Prior to that bout, Joshua (17-0, 17 KOs) will seek his third win of the year against the powerful and No. 10 ranked Molina (25-3, 19 KOs), who’s won five of his last six bouts via knockouts.

Joshua, 27, has breezed by most of his competition and his opponents have never lasted longer than seven rounds. In June, Joshua dropped American Dominic Breazeale in the seventh round, two months after he handed American Charles Martin a second-round KO.

Joshua next eyes up his third successful defense of the IBF crown, but there is a chance he could be looking past Molina and towards his potential unification bout with heavyweight royalty Wladimir Klitschko in April.

At a press conference Friday, though, Joshua called Molina a “real challenger” and promised “blood, sweat and tears” while Molina promised an entertaining match that could result in someone hitting the canvas.

"This will be a heavyweight slugfest but it's a two-way street, he can hurt me and I can hurt him," Molina told the BBC. "The knockout could be quick, it could be slow - let's see how it pans out."

Joshua vs. Molina

Start Time: Showtime begins coverage at 5:30 p.m. ET; the fight is expected to start after 6:00 p.m. ET

TV Channel: SkySports Box Office (U.K.), Showtime (U.S.)

Live Stream: Sky TV

Crawford vs. Molina

Start Time: The event starts at 9:35 p.m. ET, but the main event likely won’t begin until after 11:15 p.m. ET

TV Channel: HBO