Josh Hamilton is the 16th player to have a four home run game.
Philip Humber had the 21st official perfect game.
And there have been 15 unassisted triple plays, the most recent one by Eric Bruntlett in 2009.
I've said this before -- there's just nothing like this in other sports. The idea that you could go to a game and see something that is that rare...there's just nothing that anyone cares about in any of the other major team sports like that.
Beyond that, I think it's incredibly cool that these three events are basically equally common (or equally rare).
The unassisted triple play list is fun, because basically anyone can do it. At a glance, it looks to me as if the best player to ever do it was Troy Tulowitzki. It is weird that it happened 7 times from 1909 through 1927, and then another 7 times from 1992 through 2009, but only once in between.
Rocky Colavito is on the four HR game list, and also was in the news this week because he had a pitching win in 1968. Obviously there's a far better match between player quality and that one, and also perfect games, but at appears that almost anyone can do both of them, too (you may have forgotten that Mike Cameron, of all people, did it).
Anyway, I like looking through the lists, and I'll pass along that the MLB site linked above has a bunch of other rare event lists, too. I think the Bobby Witt one-hitter that I mentioned earlier is the most notable thing I've ever seen...I don't think I've ever been to a three HR game, never seen a triple play. I have no memory of seeing anyone hit for the cycle, but I might well have forgotten if I did. I saw a straight steal of home, once...I think I'll stick with the one-hitter.