| Wikipedia | Eng / Fr | Previous events | Japan Open |
| DEADLINE (UTC+2) | 2019-09-30 04:00:00 | Category / CUT | ATP 500 / 32 |
| Location | Tokyo  |
Tennis court / Conditions | Hard (out.) |
| Dates | 2019-09-30 - 2019-10-06 | Prize Money | 1 895 260 USD (+ 6.36 %) |
| Winners |
Novak Djokovic Edgar21 |
Ratio BWW | 61.3 % (19/31) |
(25) Adriano2000x - Alexpp - Alqualonde - atoenupu - BBZ - CocoJumbo - Dan10nis - Derff - dcb70 - Edgar21 - Energyx17 - gasgalarza - kayoo83 - latizada - Makanaki - Nicopat - Palimba - Panatta - srematias - TeamStaffMe - TennisElbow - ThomasD - Tono - Topper - Xantilope -