I expected Mashiba to lose because it aligns with how I think Ippo will return.
People speculate that Kamogawa is going to die, I think that'd take away every reason for Ippo to get back to boxing, the way that makes the most sense to me for Ippo to get pressured enough to return is if he becomes the last hope for Kamogawa and his generation, first Date lost badly to Ricardo, now Mashiba got destroyed, next is Sendo, and finally something will happen to Takamura.
I might be wrong but we'll see, now that Mashiba's arc is over Sendo vs Ricardo is coming up, during the time it'll take us to get there I expect we'll get some build up and foreshadowing for Takamura as well.
Everyone who's complaining about this chapter, brace yourselves for even more dragged out BS in the upcoming years.