Two undefeated champions meet Saturday at AT&T Stadium in Arlington, Texas, when IBF welterweight holder Errol Spence Jr. (24-0, 21 KOs) takes on lightweight champion Mikey Garcia (39-0, 30 KOs) in a 147-pound bout.

Garcia in July unified lightweight belts against Robert Easter Jr. but the jump in two weight classes means the hard-punching Spence is the clear favorite at -400, compared to Garcia at +300.

While the casual boxing fan may only have a real interest in Floyd Mayweather Jr. or Canelo Alvarez, serious boxing fans can't help but be tantalized by two highly skilled boxers meeting under such circumstances.

In May, Lance Pugmire of the Los Angeles Times listed Garcia No. 4 and Spence at No. 6 on his best pound-for-pound fighters list. ESPN in September listed Spence at No. 5. and Garcia at No. 6.

Garcia, 31, has won belts at featherweight, super featherweight, lightweight and super lightweight but some might think he's biting off more than he can chew. Spence often utterly dominates his opponent and is coming off a first-round knockout over well-respected Carlos Ocampo, delivering a pair of punishing body punches before the bell. In his win over Ocampo, the 29-year-old wore Dallas Cowboys trunks and Saturday he will be fighting at the iconic football team's stadium in front of what should be a partisan crowd.

But it would be foolish to dismiss Garcia's chances.

A master technician, the Southern California native has impressive punching power, can switch from orthodox to southpaw stance with ease and is very patient. Garcia dropped the highly polished Easter in the third round en route to a convincing unanimous decision, proving that he deserves to be taken seriously as one of boxing's most accomplished fighters. He is also the more experienced boxer with 15 more fights on his resume than Spence.

The size battle belongs to Spence. He weighed in at 146.25 pounds on Friday, while Garcia came in at 145.25 pounds and by the opening bell Spence will likely look much bigger. Garcia is 5-foot-6, while Spence is 5-foot-10. Spence has a 72-inch reach, while Garcia has a 70-inch reach.

Coverage of the Premier Boxing Champions event begins at 9 p.m. ET and can be seen on Fox pay-per-view. The start of Spence-Garcia will likely begin a little after 11 p.m. ET.

Prediction: Spence. With the home crowd on his side and playing it safe against an elite opponent, Spence won't open himself up to many hard jabs or serious power punches. Expect Spence to simply wear down Garcia, earning a convincing unanimous decision.

Errol Spence Jr. and Mikey Garcia attend FOX Sports and Premier Boxing Champions Press Conference Experience. Leon Bennett/Getty Images