KO/TKO streak in middleweight title defenses?

[ICB]

While Brunson won the record for most consecutive 1st round KO's against bums, Arthur Abraham defended his Middleweight world title by stopping his opponent for the fourth time in a row. Whatever you might think of Ayala, that's not a bad streak actually.

Anyway, it got me thinking - what's the longest streak of KO/TKO's in middleweight title defenses? After a few minutes on boxrec to brush up my memory, I could conclude that Carlos Monzon did 4 (twice), Bernard Hopkins managed 5, while Marvin Hagler had a streak of 7 (up until Duran).

Am I correct in assuming that this is the record? Or do the always knowledgeable posters of Saddo remember a better streak? And how do things look in other divisions?

Yes that is the record and as for the other division's.

Heavyweight = Joe Louis 7 and Larry Holmes 7 tie.
Cruiserweight = Evander Holyfield 5 Juan Carlos Gomez 5 tie.

I'll do some more later but i gave you a few examples there.