Your top five fighters with the biggest heart?

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Still trying to figure out if you mean of all time or current?...Seems to be a bit of both so I will go all time....
In no particular order of course....
Ali
LaMotta
Bassilio
Marciano
Quarry
Gatti
Patterson
Leonard
Conn
Holyfield

I am sure I could name a dozen more but those came first to mind

Any era I was thinking of.

I chose past fighters because their legacies are already written, but there are many current ones who are up there too.