Naoya Inoue vs. Junto Nakatani fight predictions, start time, odds, undercard and where to watch

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One of the best boxing matches that could be made in the sport goes down Saturday in Tokyo, though this pairing of elite fighters seems to be mostly flying under the radar. That fight features undisputed junior featherweight champion Naoya Inoue putting his four world championships on the line against former three-division champion Junto Nakatani.

Inoue, the current No. 1 fighter in CBS Sports' pound-for-pound rankings, has climbed through weight class after weight class, someone carrying his devastating power up in weight the entire way.

In 2014, Inoue won the WBC junior flyweight title in just his sixth pro fight. Two fights later, he took the WBO junior bantamweight title from Omar Narvaez. Inoue would successfully defend that belt seven times before moving to bantamweight.

Inoue became a superstar after the bantamweight move, crushing the competition in the World Boxing Super Series, picking up the WBA, IBF and Ring championships and beating Nonito Donaire in a fantastic bout in the tournament final. A rematch with Donaire a few years later added the WBC title to Inoue's collection before he became undisputed champion with a stoppage of Paul Butler that gave him the WBO belt.

Not content to remain at one weight, Inoue immediately jumped to junior featherweight and crushed unified champion Stephen Fulton to win the WBC and WBO belts. One fight later, Inoue was undisputed champion for the second time in his career after winning the WBA and IBF titles with a knockout of Marlon Tapales.

Inoue has defended his current four world titles a stunning six times, with four of those wins coming by knockout.

Nakatani does not have as storied a career, but at No. 8 in the pound-for-pound rankings, he has more than proven himself to be a true elite in the sport.

Nakatani won the WBO flyweight title in the 21st fight of his career and defended the belt a few times before following Inoue's lead and moving up in weight, capturing the WBO junior bantamweight title with a brutal Knockout of the Year of Andrew Moloney.

Nakatani would again move up two fights later, this time defeating Alexandro Santiago for the WBC bantamweight crown before eventually adding the IBF and Ring titles with a win over Ryosuke Nishida.