Akihisa Nishida fouled a pitch off his left shin during his at bat in the second inning of a game against Nippon Ham on June 16. He was removed from the game on defense in the fourth inning and taken to a hospital in Tokyo for tests. He was diagnosed with a bruise. The Yakult Swallows are not planning to take him off the active roster for the time being.
Source: Sanspo 6/16/2017
[UPDATE 6/17 @ 4:10pm]
Nishia was diagnosed with a bruise on his left tibia.
Source: Sanspo 6/17/2017