It's the Semifinal
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.
Aired 27/07/2014EP 41 - It's the Semifinal

Ace of the Diamond
With a stray pitch that completely missed the batter, Eijun Sawamura loses his final middle school baseball game. Frustrated by this defeat, Eijun and his teammates vow to reach the national tournament once they are in high school. But everything changes when a scout unexpectedly invites him to Tokyo's prestigious Seidou High School after seeing the potential in his unusual pitching style. Encouraged by his teammates, Eijun accepts the offer, ready to improve his skills and play at a much more competitive level of baseball.
However, now surrounded by a large number of skilled players, Eijun struggles to find his place on the team. He declares that he will one day become the team's ace, but that's only if fellow first year Satoru Furuya doesn't take the title first, with his breakneck fastballs that earn him a coveted spot on the starting roster. With the addition of these talented new players to an already powerful lineup, the Seidou baseball team aims to become the best in Japan, facing off against a number of formidable foes that stand in their way.
(Source: MAL Rewrite)