The winner of the Errol Spence Jr. vs. Terence Crawford fight will determine the pound-for-pound best boxer in the world.

That's according to Crawford who currently holds the top spot in many a pound-for-pound list. However, his spot could be under threat following Naoya Inoue's win over Stephen Fulton on Wednesday morning.

Inoue became a four-division champion after knocking out arguably the best junior featherweight in the world to win the WBC and WBO titles.

Article Continues Below

For many, the undefeated Japanese superstar is already the pound-for-pound best boxer in the world. But as far as Crawford is concerned, his fight will determine who gets the top spot and there's a very simple reason for that.

His opponent in Spence.

“100%,” Crawford replied in an interview with SI when asked if the winner of his fight will be the pound-for-pound No. 1. “Everybody in the world knows that the winner of this fight is the number-one pound-for-pound fighter in the world, undisputed. There’s no comparison.

“Not to take anything away from Inoue. He’s a talented fighter. He’s great at what he does and he looked spectacular in his recent fight. But everybody in the world knows this is a fight where you got the number-one pound-for-pound fighter [Crawford] fighting the number-four pound-for-pound fighter in the world [Spence].

“No disrespect to Stephen Fulton, but he wasn’t nowhere near the pound-for-pound list. So that tells you something right there.”

Terence Crawford certainly has a point. Fulton was definitely not in many people's pound-for-pound list whereas many have Spence in the top five at the very least.

Whether a Crawford win over Spence is enough to diminish Inoue's claim remains to be seen, however.