Hiroki Tokoda left tonight’s game against the Yokohama Bay Stars after pitching just four innings because of discomfort in his left elbow. The discomfort increased over the course of the game. He will be examined at a hospital tomorrow.
Source: Sponichi 4/19/2017
[UPDATE 4/20 @ 10:03pm]
Tokoda was taken off the active roster earlier today after he was examined at a hospital in Hiroshima and diagnosed with a muscle contusion in his left medial elbow. He will need to rest the elbow for about three weeks. He will begin a rehab program at San-gun on April 21.
Source: Nikkan Sports 4/20/2017