The Seibu Lions announced today that Takeya Nakamura was diagnosed with inflammation in his right ankle. His condition is not considered serious. He did not play tonight as a precaution. He is considered day-to-day.
Source: Sports Hochi 4/25/2017, Sponichi 4/25/2017, Nikkan Sports 4/25/2017
[UPDATE 4/26 @ 10:50pm]
Nakamura first started feeling some pain in his right ankle a few days ago. He returned to the starting line-up tonight against Orix at designated hitter and went 0-for-4.
Source: Daily Sports 4/26/2017, Sponichi 4/26/2017