Yoshiyuki Ishihara fell victim to Wladimir Balentien’s backswing. The incident took place during a game against the Hiroshima Carp at Jingu Stadium with runners on first and third and two out in the first inning. Ishihara is the second catcher this season to be hit in the head by Balentien’s backswing.
Ishihara was taken off the field on stretcher and replaced by Tsubasa Aizawa. The catcher was sent to a hospital in Tokyo for tests. He did not lose consciousness.
[UPDATE 8/3 @ 8:36am]
Ishihara was diagnosed with a concussion and a bruise on the back of the head.
Source: Daily Sports 8/3/2016
[UPDATE 8/3 @ 9:29pm]
Ishihara was taken off the active roster today with the concussion exception rule.