I guess some sort of consensus on what we mean by the “greatness” of the record would help.
Are we talking about skill level involved in getting the record? The likelihood of the record being broken? The record-setter’s dominence over his peers? Depending on the definition we assign to the term “greatness” of a record, we could come up with different answers.
If we’re talking least likely to be broken, my vote goes to Cy Young, simply because the game isn’t played that way anymore.
If we’re talking skill level, my vote goes to Nolan Ryan’s 7 no-hitters and 5,714 strikeouts. BTW, much of this was while he played in the American League - home of the designated hitter - so he didn’t even have the luxury of getting an easy out against the other team’s pitcher. Hell, the year he set the single season record of 383 strikeouts was done during the first year of the DH.
For dominence over his peers, arguments can be made for Wayne Gretzky or Bradman - who sure looks impressive, but those numbers mean as much to me as my earlier mentioned baseball stats possibly mean to the cricket fans.
If we take into consideration how difficult it was to achieve the record, I look back at Hank Aaron, who had the unfortunate honor of being in the position to break the hallowed Babe Ruth’s 714 career homerun record while being a black man in the early 70s. Race issues were at the forefront. He received death threats just for being good at what he did. He was pestered by the press all year as he neared the record, then - after finishing the season at 713, only 1 away from the record - he had the entire off-season for people to hound him, harass him, threaten him, etc before finally performing under all that stress. Not to mention, he played in a time when the pitching was so strong, they had to change the rules to give batters a fairer chance.
Or how easy can it be to do what Cal Ripken, Jr. did and play in 2,632 consecutive games? And as a shortstop to boot? To play every day in the big leagues, you gotta be good or you will get benched. And then to play a position where you’re diving for balls, getting slid into while turning double plays, etc, you have to play through pain sometimes.
Of course, any record is attainable. Someone got there once, it can be gotten to again. Does just having someone come close to the record mean that record isn’t that great? Does it make the record any less difficult to achieve?