Glenn, I don't have a problem with you - or anyone else - choosing to define a Grand Slam as all 4 in the same calendar year. That's a simple definition, and a precise one at that, and I'm all for precision.
What got me going originally was your statement that Tiger's Slam (or whatever you choose to call his 4 in a row) doesn't compare to Jones' or Hogan's achievements (at least, that's how I interpret the statement that Tiger doesn't have the claim to golf's greatest achievements, like Jones or Hogan), and that the pressure/media scrutiny was not as great for Tiger as Hogan or Jones in their big years. As I said, each accomplishment was remarkable, unbelievable, and deserves to be celebrated in its own right.
I wasn't alive in 1930 to observe the intense media scrutiny you seem to feel Jones was under, but I can't believe there are many people other than you and maybe OB Keeler's descendants that believe the media pressure was greater then than now. If that's your belief, we'll just have to agree to disagree. I'd bet a lot of money (to me, anyway, pocket change to others) that no one even mentioned Jones was going for the Grand Slam when he teed it up at the US Am to finish it off. I've read his writings, and I don't believe anyone viewed it as completing the magical Slam, just an amazing season, the likes of which no one had seen to that point. I'll have to read the Sampson book I bought recently to see if he shares anything on this point - if anyone else already has, I'd love to hear it.
As for your home run question that you said no one addressed, I beg to differ: I have stated repeatedly that that is a seasonal record, recognized by the ruling body of the sport in its official record book. By definition, it is number of home runs in a season, season being defined by the season of the sport, not simply the number of games. That is in fact the reason they eventually took the asterisk off of Maris's record, even though it was in more games. To recognize your home run hypothetical as a record, someone would have to track all 162 game stretches in baseball, all 16 game stretches in football, etc.
The Grand Slam is a mythical construct of media people and fans. It is not a recognized record in the record books of the USGA, the R&A, the PGA Tour, whatever (at least, not to my knowledge). You seem to feel the intrinsic element is the calendar year (or maybe that we hold a ticker tape parade?
). Robert Walker and I feel it's holding all 4 at once. And, yes, this means that each time someone wins 1, he has a chance to complete a Slam by winning the next 3. The reason no one talks about it is that it is incredibly rare to win 2 in a row, let alone 3 or 4. If Phil wins the US Open at Winged Foot, I, for one, will consider it on par with Hogan winning 3 in 1953. Not better, not worse, just different and worthy of celebration. And if he finishes it off at Hoylake, I'd call the Phil Slam a Grand Slam. I see almost zero chance of this happening, but I'd celebrate it nonetheless.