Rick van den Hurk is still feeling the effects of fatigue and will undergo tests at a hospital in the Kanto region this week. The Softbank Hawks are saying the fatigue is general and not located to any specific region, like the shoulder or elbow.
Source: Sponichi 6/14/2016
[UPDATE 6/15 @ 9:19pm]
Kimiyasu Kudo does not want van den Hurk to feel rushed and wants him to return when he is at full strength.
Source: Sponichi 6/15/2016