The best way, IMO, is to attend live on a regular basis, and build
up a set of mental images of all or at least your key players.
Then if observationally you feel that a key player is at his best,
but for whatever reasons does not have the stats you mentioned,
you will have a good chance at "value".
In theory, any given player could be at the top of his game, but
due to bad posts, bad partners, bad breaks, etc might not have
the wins (games or points) that he might easily get otherwise.
Anyone can spot 10 wins after the fact, but obviously the dream
would be to spot the conditions that lead to them before they
happen.
By attending live and watching *everything*, a top observer should
be able to do just that.
However, personally, I haven't been a regular live patron in years
now, so can't speak from recent experience.
