Martínez and (Juan) Marichal, Puerto Ricans Roberto Clemente and Roberto Alomar, Venezuelan Luis Aparicio, Panamanian Rod Carew and Cuban Tony Pérez are the only ones who earned their place thanks to the vote of the Baseball Writers' Association of America (BBWAA)
I saw them all play at one time or another, and in person. It is difficult, if not impossible to properly and confidently rank players in a sport of individual, positional achievement like baseball. So, I always hesitate at making definitive elections about who is or was "the greatest" in the sport.
A bunch of us guys were having this very argument, if you can call it that, at my local cigar bar/watering hole last week. And yes, we are New Englanders and Pedro naturally attracted our "props", no matter that he was sometimes a serious pain in the ass. When Petey was on, he was Lights Out like nobody's goddam business.
But when those of us who grew up in the 60's and 70's talk about Roberto Clemente, well, a certain quiet reverence instantly descends, and not merely because he died far too young, on a rescue mission in Central America. He was lightning and thunder in a uniform.