Seido awaits their first game of the summer tournament. Sawamura wants to get used to wearing the ace number and so begins to sleep in his uniform, earning him a teasing from his roommates. Coach Kataoka receives an stimulating call from his former mentor Coach Sasaki, the coach of Yura Sogo Engineering High School who they are about to face. Yura Sogo competes in the first round anticipating their game against the seeded Seido. What does the cunning Coach Sasaki have up his sleeve?
Their starting pitcher was 
number 12, second-year Osu.
،راميهم الأوّل هو الرّقم 12
.أوسو من السّنة الثّانية
Der Starter war die Nummer 12,
Osu, im zweiten Jahr.
Abrió el dorsal número 12,
Ohsu, de segundo.
Abrió el dorsal número 12,
Ohsu, de segundo.
Leur lanceur partant était le nº 12,
un première nommé Osu.
Il loro lanciatore di partenza è il numero 12,
Osu, del secondo anno.
O arremessador inicial é o
número 12, Osu, do 2º ano.
Стартовый питчер — одиннадцатиклассник
 Осу, номер двенадцать.