Japan Open (tennis)
tennis tournament at Tokyo, Japan
The Japan Open, currently sponsored by the Kinoshita Group, is a men's tennis tournament held in Ariake Tennis Forest Park with its center court Ariake Coliseum, located in Koto, Tokyo. It has been held since 1972. In 2018, the venue switched to the Musashino Forest Sports Plaza as the Ariake Coliseum was renovated for the tennis events at the 2020 Summer Olympics. The championship includes men's singles and doubles competitions.
History
The Japan Open was first held in 1972 as a minor ATP event and from 1973 was part of the Grand Prix tennis tour. The Japan Open was known as the "Tokyo Outdoor Grand Prix" between 1973 and 1989. From 1990 it was part of the ATP Tour. From 1979 until 2008, the Japan Open was a joint tournament for both men and women. This is no longer the case in the aftermath of the Ariake Coliseum hosting another women's professional tournament, the Pan Pacific Open. On the women's side, the Japan Open was held until 2014 on the WTA Tour, and then it was downgraded to a $100,000+H ITF Women's Circuit event.
This brief starts where responsible research should: with the source description of “Japan Open (tennis)” as tennis tournament at Tokyo, Japan. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as tennis tournament at Tokyo, Japan. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 18, 2026. The linked authority identifier is Q1025949. Authority coordinates are 35.636, 139.791. 1 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1972, 2018, 2020 and 1973.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
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The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Japan Open (tennis)”, its source revision and the description used here.
- Expand the search: follow Japan Open (tennis) primary sources, Japan Open (tennis) archive and Japan research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
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This entry incorporates text from “Japan Open (tennis)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.