Unfortunately there’s still more to the RSI2 story – boy, it’s more than I dared to think about.
So let’s play master & serpent.
Observations.
There is always a serving side and a counter side.
Serving is taking the lead.
Serving / opening is usually done by a Single Zero.
On occasions the serving rights would be taken over by a triple 0, a triple M or even triple S, so peel an eye out for these.
& all this s*t is going down at a complete disregard for the current market type.
Countering a serve is a Zero + M combination typically.
If the ball manages to make progress between the Zero and the M, one more hit may be necessary.
Observe.

0 = Zero
0/S = Single Zero
M = Measuring Leg / Mastodon / Magenta
S = Shy of an M
Unfortunately, being the server side does not mean that you will get to make the next serving from a gain, it is possible to counter the server into a retreat & even to take over the serving rights on the fly.
Observatory.
What if the serving side gets to return the ball with a wrist flap leaning into the net at the M line? That means wave 3 of the same wave structure was put on the plate. Eagerness on the serving side, no time to prepare for digestion on the other. (No Time To Compute)
