There's a ball game tournament at Seigaku, and the tennis club members are required to play other sports. Ryoma enters the ping-pong competition, but his opponent seems to be nursing a grudge.
...they might have joined
the volleyball club instead.
hätten sie vielleicht
Volleyball gespielt.
podrían haberse unido
al club de Voleibol fácilmente.
podrían haber entrado
en el club de voleibol.
ils auraient pu rejoindre
le club de volley.
eles poderiam ter entrado
para o clube de vôlei.