No hostility, just respect ... at least that's how it went down when Canelo Alvarez and Sergey Kovalev met backstage for a recent fight event -- with Kovalev even asking for a selfie!!!
The two came face to face during a Sept. 18 promotional event leading up to their big Nov. 2 fight in Las Vegas ... and it was like old friends getting together!!!
Sergey commented on Canelo beefing up as he prepared his body to jump two weight classes to fight Kovalev as a light heavyweight ... the first time Canelo's ever fought at that weight.
And, after a friendly exchange and a fist pound, Canelo agreed to pose a quick selfie.
It was all captured for DAZN's docu-series, "40 Days: Canelo vs. Kovalev" -- which features all of the behind the scenes drama leading up to what could be the fight of the year.
The 3-part series, produced by LeBron James and Maverick Carter's Uninterrupted brand -- along with Mexican soccer superstar Carlos Vela -- kicks off Tuesday night ... and features stars like Gabriel Iglesias, Draymond Green and DJ Khaled.
One cool moment ... after Sergey and Canelo bro down, boxing legend Bernard Hopkins goes up to Alvarez and offers up some advice on how to approach the fight. It's actually a pretty cool moment from one champ to another.
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