Karasuno lost. It was an awesome game and I liked it how oikawa was observing everything concluding it won't be for today.
Anyway with this there are two possibilities: they truly lost and they will have to start from scratch or a fault has been made and the winning point is not validated. A block can have a very common mistake (a block touching the net) being judged as a fault
Seeing the page of the block again I didn't see any touch in the net or anything. Also, the final whistle has been given and the point was added, so I guess there isn't doubt. They really lost this match, the final of the match was announced in the final page, too.
This ending was very epic, in the sports we have victory and defeat, they aren't invincible and have a lot to grow up, anyway. With this they have two huge rivals, Aoubajousai and Nekoma. Next match with each other will be much more epic.
I didn't read chapter 69 yet, so if anything happened that tears apart my feeling, ignore me for now and wait my anger later. XD