I would think when considering a CAREER, the value of a single calendar grand slam is not necessarily more impressive than simply winning all 4 slams in a year.
But Daze, isn't winning a calendar Grand Slam the same as winning all 4 slams in a year?
If a player is a stand out for 2 or 3 years but has many years where they are not a stand out, they shouldnt be getting bonus points because they had a great year. A career view is different from an individual year view for that reason.
I guess it depends on the system one uses to rank players' career, and in comparison with other players. I certainly think a bonus would be warranted for sweeping all 4 in one year. So few have done it, it does mean that it is a pretty unique achievement.
To me, a grand slam is a cute ego boost & side note to a player's career, but i've never quite gotten why it matters ... what matters long-view is being able to perform on all surfaces against a variety of competition... which happens over the course of a career far more than having 1 spectacular year. So there's at least an alternative view on the subject.
Kind of ironic, because the 5 who have won a Slam: Budge, Connolly, Laver, Court, and Graf are all at the top of the sport when ranking players all time, with the exception of Budge, and that really had to do with the structure of the game when he played. I absolutely don't agree that winning THE Grand Slam
is a side note to these player's legacy. It is the the definitive statement, and a measure against which all players will be compared against, and which every player now would absolutely love to emulate.
I agree that in a career review, it is what is achieved over the course of a career, and not just one year. And again, those who have won the Grand Slam have had amazing careers. Connolly's was tragically cut short, Budge went into the pros right away. Laver is still #4 all-time in terms of majors won (and many would speculate he might be in the lead had he been able to play in majors from 1963-1968). And Court and Graf are #1 and #2. So again, those who won the Grand Slam did pretty well for themselves in the long run.
And when looking at the players who won career Slams, it's a pretty impressive list too. And while there are notable exceptions on that list, tennis is a game where you can't win 'em all. So those who have achieved the distinction of winning all 4majors in a career, and especially in one year, where the pressure is enormous, I think it reflects true greatness.