I realize my post sounded harsh to Connors, but I remember even his own account. I just went back and looked in his book. A lot of this matches what Mcenroe and Ashe have said as well though some story details vary as one might expect. I was going to even post a few pics of passages, but that doesn't seem possible.
I'll add in that Connors also didn't like that the team had restrictions about fraternization with the other team - and he completely ignored them. (admittedly he has a good point that he's not going to ignore Nastase because it's Davis Cup - instead he had dinner with Nastase and went to his house! lol. That might be going a bit far....)
A few quotes:
"Mac had won the Davis cup 4 times already, and if I'd been thinking straight, I would have wished him good luck and watched the matches on TV. Instead, I joined up and there were problems form the get-go. He was whipping my ass (and pretty much everyone else's), and that didn't sit well with me."
"I knew before I even stepped on the court that it wasn't going to be my day. I wasn't disappointed. Along the way, my attitude had deteriorated and the result wasn't pretty: smashed racquets, verbal abuse, point penalties, game penalties. It was a bad scene. I should have been defaulted immediately; maybe that's what I was hoping for, but this was the Davis Cup final and that didn't happen.
Earlier connors mentioned Mac beating him in Dallas, FO, Queens, Toronto, Wimbledon and the USO, and says:
"At least in New York I took him to 5 sets in what a lot of people regard as a classic match, but really so what? I got beat; that's all I cared about and I was starting to get really pissed. The explosion wasn't far off.
Throughout the year Mac and I had also had the pleasure of each other's company as Davis Cup teammates.
I'm pretty sure he enjoyed it about as much as I did."
LOL. At least Jimbo seems very candid here. I also recall that Mac had some personal problems....and he wasn't getting along well with even Peter Flemming at that time, so he was a mess - though as I said, even Ashe would later say that Mac really didn't behave all that badly.