Jesus Christ, it's been more than a year since I've started translating this manga. Hope I'll see it finished someday!
About this chapter... I like how optimistic Touma is. I mean, it's hard for a baseball protagonist in an Adachi's story NOT to be optimistic, given that they are all "il predestinato" for Koshien, but still. This match was down to luck, and Meisei got some of it in the end.
Noted Sou's positive remark when Ooyama let Touma out to score the final run. Ooyama might've actually done it out of consideration for Touma (he's easily swayed by emotions), but Sou looked completely pragmatic at that moment - indeed, Touma is the fastest on the team, so it makes sense that he replaced Nangou.
About the older Akai - I think it's implied that he roots for his bro, thus the ace doesn't want him to become upset if Meisei loses. Or that he wants to play against Tachibanas that much.
The next chapter will be released on
September 12th!