Sanada. His loss against Yukimura and training in the mountains, I'm looking foward to the beast player he is right now. BA is really strong altough we don't know what it is, that completely overwhelmed Yukimura in that point means it could destroy Irie. Irie, won't return Rai normally until he at least does what Yukimura used to return it, with the "grip" of his racket. Furthermore, if Sanada activates it, and uses stronger shots and versions of FuuRinKaInZanRai, I'm sorry but Sanada would completely overwhelm Irie.
I don't think troll mode Irie would win, Sanada would own him. Serious mode would be dangerous, but I see Sanada overcoming it with BA and winning. Is likely that Sanada will face Shuuji in G10 matches, and he needs a win since his last match. Sanad's true strength is too much, right now, Atobe, Tooyama, Akutsu, Shiraishi... Except Yukimura, who I think is no longer above Sanada, and Echizen who for sure is, no one can touch him. I see him defeating Irie with BA, Sanada is not like Atobe, he is LEVELS above him, he would completely destroy No.20 to No.6. The top 5 are different but I see Sanada defeating most of them, if not, Oni, Ryoga, Duke and Shuuji. Sanada right now is really really strong, probably the 2nd strongest Ms after Echizen and one that will be at top 3 of the G10.