It's the Semifinal - S1.E41

The results of the quarterfinals are shown. Seido learns they will be facing a giant who is a curve ball specialist in the semifinals. Furuya is informed he won't pitch in the semifinal. Instead they hope he recovers from his fatigue. The team only has 1 day to prepare for the semifinal match. In an effort to help the team advance, the seniors raise the mound and the coach acts as the pitcher for a special batting practice. As the morning of gameday arrives, one of Seido's players accidentally shaves his head bald. Sawamura also learns his friends from home will be attending the semifinal to root for him. Meanwhile Haruchi's brother reveals only 18 players can move on to nationals, and he reveals if he doesn't make it to nationals, he will retire from baseball. This episode covers chapters 121 to 123.