What to read after Fast-Pitch Feud?

Now that twelve-year-old Anya is old enough to join her fourteen-year-old sister Marina on the fast-pitch softball team, things are becoming tense between them. Anya has trouble catching her sister's pitches and resents Marina's criticism and being moved to the outfield, and Marina is increasingly obsessed with her role as captain and angry because Anya does not seem to take the game as seriously as she does. With an important game coming up the sisters are going to have to work out their differences if their team is going to win.