One of the subjects I plan to explore regularly in this space is tennis history. It's a subject I've explored to some extent already, generally through
the context of my Melog ratings. While I think the Melog system does a
creditable job evaluating tennis performance, it is not without issues.
One of those issues is that the system does not match the
evaluation of tennis players in popular opinion. I often find this to be an
asset; Melog places value on excelling throughout the year, not merely in big
tournaments. But it is inescapably true that most evaluators, including the
players themselves, put far more emphasis on Grand Slams than they do on
anything else; in fact, “career Grand Slams won,” which obviously ignores achievement in other events, is a commonly-used proxy for
all-time ranking.
There is another problem with the Melog system that
troubles me far more: It requires a great deal of time to compile the necessary
data to evaluate even a single year of tennis. And rewarding as I find that
process, it still means that I’ve only got the numbers for 2008-14 so far,
which leaves me without a ready means of comparing Roger Federer to Pete
Sampras and Bjorn Borg. That would be a nice capability to have.
As it happens, I’ve developed a method that addresses both
of those problems at once: it is based entirely on Grand Slam performance, and
it is readily calculable for anyone who’s played in the Open Era. And given the content
of these introductory paragraphs, you’ve probably figured out that I’m
presenting that method here.