Ciryl Gane Says Derrick Lewis Is NOT His Toughest Opponent

Derrick Lewis might hit like a ton of bricks, but UFC star Ciryl Gane says The Black Beast is NOT the most dangerous guy he's stepped in a cage with, telling TMZ Sports that honor belongs to Alexander Volkov.

We talked to 31-year-old Gane -- a perfect 9-0 in the cage (including 6-0 in the Octagon) -- about his UFC 265 main event fight with Lewis for the UFC's Interim Heavyweight Title ... and asked if this was the riskiest fight of his career.

"No, I don't think so. I think Volkov was more dangerous than him. Yeah, I think Volkov was more well-rounded at first, Volkov was taller, heavier, and more technical than him," Gane says.

If you're not familiar, 32-year-old Volkov is a problem in the Octagon. He's 6'7", and has has beat some of the best competition in MMA, from Alistair Overeem to Fabricio Werdum.

But, Lewis is also incredibly dangerous ... and has scary power. He's got 20 knockouts on his record ... and the last time he was in the Octagon, he put Curtis Blaydes to sleep.

Of course, a win would set Gane up for a scrap with Heavyweight champ Francis Ngannou ... but that fight will have to wait a few months 'cause Gane's expecting a baby!!

"I think I'm gonna rest a little bit. I don't know if you know, but I’m waiting for a second daughter."