After watching Paul Pierce grow emotional during his final game in Boston earlier this month, Doc Rivers reminded reporters with a laugh he had seen someone cry on the court before.

"I saw Big Baby cry one time," Rivers cracked, referencing the time Kevin Garnett had berated Glen "Big Baby" Davis to the point of tears.

The joke led to a chorus of laughs, but Davis might not have appreciated the burn. Apparently, he and Rivers -- who clashed several times while working together as coach and player -- have hit a rough spell in their relationship. During an interview on Chris Broussard's podcast, "In the Zone," Davis lit into his former coach, saying that he considers Rivers overrated as a coach and believes Rivers was "lucky as hell" to lead the 2008 Boston Celtics to a championship.

"Because what Doc had in '08 was special," Davis said on the podcast. "And he was lucky as hell. Lucky as hell. The year before that they were wearing trash bags (in the crowd). ... But then the next year they win it, now he's one of the best coaches ever? I'm just not feeling that, you know what I mean? You give credit to KG. You give credit to Paul Pierce. You give credit to Ray Allen. Those are the guys that made sure whatever Doc needed to be done got done. And so now it's easy for Doc to do his job.

"And then you give credit to Danny Ainge. That's the one you give credit to because I know multiple times he had to talk to Doc just to say, 'Hey Doc, leave them alone. Hey Doc, ease up. Like, there's points where you ease up.' I would play good games and Doc wouldn't even give me like, hey. I'd play great games and he'd be: 'Go do it again.' You know? You want to hear that, 'Hey, great job kid. Good job, man. Keep it up.' But not, 'Go do it again.' So I'm off that Doc tip man."

Davis proceeded to call Rivers "a great guy" but said he has "cooled off" on his former coach. Davis did not like the way his time with the Los Angeles Clippers ended.

"I don't like what he's doing right now," Davis said. "I don't like his organization, what he's doing, his teams. We had something in '08 and that was it. You know what I mean? That's what that is. So far, like, I didn't like how the way he handled me on my exit. Yeah, hold yourself accountable, but at the same time I had a broken ankle. I won a championship with you and you don't even really call me. I've got to beg you to call me. My agent has to beg you to call me. My ankle's broke. And you just told me -- they pulled me to the side when I played against Houston and told me, 'You're not playing the way you need to play. You're not doing this.' My ankle was broke. My ankle was broke. And they're shooting me up, shooting me up, shooting me up every day to play. My ankle was broke."

Though he said the Clippers did not know the extent of the damage, Davis said, "They just did an X-ray (for the ankle). They didn't do an MRI. And it was just like, 'Oh, can you run? Can you play?' The next day they had me working out after I broke my ankle. They had me trying to play Game 7. It was crazy and I'm just not feeling that. When you win a championship with somebody, you don't treat nobody like that. No matter if it's a business or not, because it's bigger than basketball between us, Doc. I have never left you at the altar. I've never left you at the altar. You know what I mean? I've never left. You go get Spencer Hawes, he does nothing. You've got to trade him. You've still got me on the bench knowing that I can play, but you still go play Spencer Hawes knowing that you're just trying to cover your own butt because Spencer's not panning out the way you wanted him to pan out. And I just don't like that. I'm not feeling that."

Asked if Rivers is overrated as a coach, Davis replied, "I think so. Yeah."