To be fair Ken, while those are very tangible, physical feats (specially endurance) usually don't mean a whole lot unless specified. For example, you have pre-Kanto Kirihara beating (at least) 8 high schoolers in a row, and even after all this time and with all his camp training he has a mediocre 3 in stamina. Then you have David going to Hyotei and beating 100 non regulars. The fanbook does already assess Ryoma's stamina and it's actually pretty good, but still a 4 which I believe was said to be insufficient in Ochi's profile instead of something otherworldly.I don't think Ryoma match with Dodo is a fair comparison. He already beat at least SIXTEEN opponents confirmed by this picture. That's at least 16 matches. He's already spent by that time, which is heavily suggested even in the manga with him fainting.
To put in circumstances how ridiculous of a feats that is, many members of the G10 is stated to have problems going through the full sets (maximum of 3). Even if Ryoma only do 1 set match with them, that's still over 5 times of what the a lot of G10 is capable of handling, and with ALL of his opponents being either Champion or Runner up level.
And that's minimum. In actuality, he beat 24 of them, as mentoned here.
Which means he went and beyond 8 times of what a lot of G10 would struggle to do. And still managed to play a little more after that.
That said I agree 100%. Ryoma was extremely tired and not even serious against Dodo, he was just trying to beat him with a Drive B (and he did).
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Ryoma: Stamina - 4: It's amazing how long he is able to hold out despite his increased breathing. With his ability to keep composed in a drawn out full set, it's hard to believe he's only a 1st year.
Ochi: Stamina - 4: In terms of stamina, he falls a bit behind the rest of the 1st String. His weakness is that in the latter half of a match his movements become tired and slow. He urgently needs to strengthen his stamina.
Pretty much saying it's great for 1 sets but not enough for 3.
6 is pro level based on Gin's Power entry.