Again, it's completely baseless to say that Oishi defeated somebody from second court, you have nothing to suggest that. Also, Miyako had a good power stat (4 I think it was), and Momo's BJK is not Oni's. Yanagi should have enough technique to return it or to prevent Momo from using it. Oishi is a weakling here, and Miyako and Yanagi both know how dangerous BJK when it comes to wrist damage, they obviously know well about the shot. And I think both of them have enough technique to seal it (and yanagi to return it).
You can't say Momo alone will take out those two with a BJK. And Yanagi and Miyako should develop a way to prevent it and score past Oishi and Momo. Remember how Miyako got used to Shiraishi's speed, it's possible they can prevent Momo from hitting it, and Oishi is practically useless here.
No, Miyako and Yanagi have not shown anything at all that shows that they are 1st stringer material from what we've seen so far. And Momoshiro alone solo 2 1st stringer. That's really enough for me to vote Momoshiro/Oishi in this match. Unless Yanagi/Miyako added sum is higher than 2 1st stringer combined, I don't see them winning this match.
It's irrelevant how weakling Oishi are in this battle because Momoshiro is too much for the other two to handle. Stats doesn't matter as much as partnership. This is shown when Chitose/Tachibana lost to the 3rd court pair. Unless you were to say those two are 3rd court level. But then, Yanagi doesn't show much more impressive things than WoK. So in that case, Yanagi is 3rd court max too then. If you're not sure about Oishi/Momoshiro partnership, they are from the same school AND have a canon pair match in the series before.
This is doubles, so all Oishi role have to do is to ensure that Momoshiro can hit BJK and it'll all be good game. Momoshiro have a decent strength and it's been shown throughout the first series. Yet his waist is broken.
Why can't I say Momoshiro will take out those two with BJK when he take out a 1st stringer who is pretty much 3 court above Miyako? Renji is the other team only hope here. And I don't see him as 1st stringer material as he got completely stomp by 1. But it doesn't look like I'm going to convince you.
---------- Post added at 10:07 AM ---------- Previous post was at 10:06 AM ----------
Holy crap the dude has power.
Miyako/Yanagi, no doubt.
Are you saying that 11/20 aren't "singles/doubles/singles/doubles/singles/doubles/singles" on porpuse?

Do you want me to explain you why they are like that and not "singles/singles/singles/singles/doubles/doubles/doubles"? Well, I dunno, ask Konomi.
Tanegashima isn't a doubles player (neither are Sanada and Akutsu), Ohmagari clearly is...
You don't know? Well, then perhaps, the most likely option is that the ranking is based on their skill as a player and not some bs you come up with to support the character you like, then. Or you can try to argue of why Akiba can beat Byoudonin because the ranking is not based on their skill.
I'm just waiting for a page that prove that Yanagi have enough skill as a player to cover for the difference between 1st stringer and 3rd court as well as himself. Just make sure that page is not in your imagination. Hint: It is.