The Toyota-Denso Cup - World Oza was an international Go competition, sponsored by auto maker Toyota and parts manufacturer Denso.

Outline

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The World Oza, sponsored by ToyotaDenso of Japan, was regarded as the newest international tournament, the first sponsored by a Japanese company.

32 players were invited from the following countries/regions:

The tournament was held every 2 years. The first rounds were knockouts, and the final match is a best-of-three. The winner's purse is 30,000,000 Yen ($285,000) and a new Toyota car that is worth almost 10,000,000 Yen ($95,000).

As of June 16, 2009, the Nihon Ki-in has confirmed that the Toyota & Denso Cup World Go Oza has been canceled by the sponsors.

Winners & runners-up

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Year Nat. Winner Score Nat. Runner-up
2002-2003   Lee Chang-ho 1–0   Chang Hao
2004-2005 Lee Sedol 2–1
2006-2007 2–1   Cho U
2008-2009   Gu Li 2–0   Piao Wenyao