Former four division world champion Roy Jones Jr. believes Billy Joe Saunders has a 'good chance' of shocking the world with a victory over Saul 'Canelo' Alvarez on Saturday night at AT&T Stadium in Arlington, Texas.

The two champions will collide for the WBO, WBC, WBA super middleweight titles.

Saunders, 31-years-old, is a tremendous underdog in the fight - and he's had a lot of inactivity with only two fights in the last three years.

For his part, Canelo will be fighting for the third time in five months.

Jones believes the tricky boxing style of Saunders will create potential problems for Canelo.

"I give Billy Joe a really good chance. The reason being is because if you think about Canelo Alvarez, the toughest two fights he's had in his career to me were Floyd Mayweather Jr., who's a pure boxer, and a southpaw by the name of Erislandy Lara, who was a boxer," Jones told IFL TV.

"So if you think about those two guys, who's Billy Joe closely related to the boxing ring? Those two guys. He's a boxer, he's southpaw, and he can punch, but he thinks boxing first, much like Tyson Fury. When you got a guy like that, the only problem Billy Joe's gonna have is, can he last long enough early to get to those late rounds without sustaining any injuries, cuts, headbutts, anything.

"He has to figure out how to make up for that ring rust before he gets in there, because if he can get into the fight right away, he has a very good chance of winning it. If he doesn't get into the fight right away, then he'll get blown away, but he's a very smart guy, he's a boxer, he's a smart boxer. With that being said, he should have a chance in this fight."