[4] During his tenure as FIBA president, Zecca organized several regional baseball tournaments, including one in 1956 that saw multiple Central American and Caribbean countries participate.
[12] Zecca secured the return of the United States to the Amateur World Series in 1969; participation of the European nations would follow the next year under his successor, Juan Isa.
[10][13] Much of the controversy surrounded the participation of communist Cuba in international events, after the Venezuelan government's decision to deny visas to Cuban players scuttled plans for an Amateur World Series there.
Determined to avoid this, Zecca declared that tournament organizers were not bound to ensure attendance of participating countries, if there were issues that "cannot logically be overcome within the laws of international sports.
"[14] International Olympic Committee president Avery Brundage wrote to Zecca in an attempt to secure Cuba's participation in the 1965 Amateur World Series, to no avail.