Which boxer was most dominant in their title fights and won the most rounds in title fights?

Roy Jones won a lot of wide decisions when his fights went the distance.

 

60s Ali?

 

Wlad dominated long time at heavy.

 

Pernell Whitaker rarely lost rounds in most of his career.

 

Jones

 

Ricardo Lopez pretty much dominated his weight class.

 

Yes of course but in multiple championship level divisions for the first thirteen years of his career I’d put his dominance up there with anyone’s.

 

You're shooting holes in basically everything posted in reply to your original post even though every example given has been good. I'm assuming you meant to post the title as "What Fighter Never Lost a Round Ever?" but it got auto-corrected to what it says now.

So I think I should point out that Floyd Mayweather, YOUR example lost a lot of rounds in his career, given his penchant of starting slowly. The fights with Baldimir and JMM were two of the few fights where he won a clean 12 round shutout. He won most of his fight somewhere in the range of 117-111, like the fight with Zab Judah, Marcos Maidana, Cotto, Chop Chop Corley etc. Sorry, Floyd doesn't count

 

That doesn't have anything to do with the original question though.

 

Mikey Garcia has won all of his fights and most of those victories have been extremely one-sided. If you made a pie-chart of his career comparing rounds won vs. rounds lost, it would be a tiny silver of rounds lost.

Once Bernard Hopkins completed his transformation into a cagey boxer-puncher he went several years without losing rounds except every now and then when he was feeling a guy out. Trinidad, Morade Hakkar, Robert Allen III, Howard Eastman were all won without much difficulty.