ok, I did the first 2 corrections, but not the 3rd one, coz "volea de reves/derecha" is taken from the strike name lists, it's not apart...
For the service, the more high is the difficulty level, the faster (but just a bit) and the better placement (ie: nearer the lines) the CPU will hit his serves, so I think it doesn't need to have a higher 1st serve ratio in addition...
what do you mean?, what we meant is that the preposition "de" at "Error de volea de
reves(or derecha) could be changed for "por" to not repeat twice the "de"
-but that faster serves and better placement are not visible if he has to do less riskier second services because he's not doing much first services, at the end is like no speed and placement bonus at all. Also, a better player doesn't have just faster services, but a better effectiveness with his service too
so my suggestion:
Club and junior: from 20% to 50% at 1st service and if, for example, club player is doing an average of 140kmh service, junior should do 150 or 160kmh as average
pro and master: from 50% to 75% at 1st service, pro should have an average of 170kmh(like what often happens in online fair mode) and master 190
incredible: from 75% to 90% at 1st service with a higher than 200kmh average and often getting to 234kmh
i think that would make matches against cpu funnier for everyone, from new players to experienced players, more than have just one effectiveness ratio for all the levels