Nagai Stadium , a.k.a the Yanmar Stadium Nagai for sponsorship reasons, is a stadium in Osaka, Japan. It is the home ground of J. League club Cerezo Osaka. The stadium has a seating capacity of 47,000. The rugby union club NTT DoCoMo Red Hurricanes Osaka use the venue for most of their home games.

NTT DoCoMo Red Hurricanes Osaka is a Japanese rugby union team owned by NTT DoCoMo. They qualified for the 2011–12 season and finished 12th place overall. The team rebranded in 2022, ahead of the rebranding of the Top League to the Japan Rugby League One.