Former two division champion Timothy Bradley would back Josh Taylor to beat Teofimo Lopez.
Taylor and Lopez have traded plenty of words in the last few months.
Last year, Lopez shot up his worth when he picked up a twelve round unanimous decision over Vasiliy Lomachenko to unify the WBA, WBO, WBC Franchise, IBF lightweight titles.
Lopez has often discussed his future intention of moving up in weight to 140-pounds to pursue more gold.
He is scheduled to return to the ring next month in a mandatory defense against George Kambosos.
Taylor is the undisputed champion at junior welterweight, after winning a twelve round decision over Jose Ramirez earlier this year.
Taylor is set to make a mandatory defense against Jack Catterall in December.
The Scottish star has often criticized the "undisputed" claim by Lopez.
He does not view Lopez as an undisputed champion, because Devin Haney holds the WBC lightweight title. Lopez holds the controversial 'Franchise' version of the WBC belt.
The two fighters share the same promoter in Top Rank - which makes their potential battle a realistic possibility in the future.
Should they ever collide in the ring, Bradley would pick Taylor to come out on top.
"Taylor is as legit a champion as they come. Anybody that can deal with the relentlessness, power, pressure of a guy like Jose Ramirez and actually hurt him has my respect. And then you have a guy like Lopez, who is fast, twitchy, speedy, and likes to have his way on the outside. He likes to control range with big shots, time guys well when they move him in, and he mixes things a bit," Bradley told ESPN.
"Lopez doesn't fight a whole lot on the inside, while Taylor can do a little bit of everything. He's bigger, taller, longer, can box on the outside, can press on the inside, can punch in spots. Taylor has a very good chin, and he showed that against Ramirez. In the past I would've picked Lopez, but right now I have to go with Taylor. He has shown me that he not only has the ability to adapt inside the ring, he showed me he's also mentally strong. Against Ramirez he picked his spots wisely and fought on the outside. He was able to set up his left hand, that pull-counter off his feint, and caught Ramirez as he came in. That's just brilliant stuff."