It will get clearer once it starts.
Basically, every event you are playing counts in this competition. Singles win gives you 0.4 points, doubles 0.2 points etc. So the more wins you get in other events, the better you do here.
It starts after the first leg's tournaments have finished, and this is the last week for the first leg.
So if Doc is all caught up with everything, the regular tennis poker results (including this event) might start next week or shortly after that.