Japan’s Olympic delay has upended years of careful planning by organizers and spawned costly headaches for small businesses, hotels and even pro baseball teams, compounding a $12 billion price tag.

The Tokyo Games were postponed until 2021 last week as the coronavirus outbreak deepened, an unprecedented move in the 124-year history of the modern Olympics.

New dates have yet to be set, leaving sponsors and businesses uncertain and scrambling.

For Japan, a one-year postponement will likely cost 641 billion yen ($6 billion), according to Katsuhiro Miyamoto, an emeritus professor of economics at Kansai University who studies the economic impact of the Olympics.