Drew Naylor left his start against the Yomiuri Giants today after he struck out lead-off Hisayoshi Chono in the first inning. He complained of pain near his right elbow.
Source: Nikkan Sports 5/7/2016
[UPDATE 5/8 @ 5:24pm]
Naylor started feeling discomfort in his elbow during his pre-game warm-ups in the bullpen. He spoke to Motonobu Tanishige and they agreed he would face one hitter.
Source: Sports Hochi 5/8/2016