The Chunichi Dragons were planning to send Yudai Ono to Ni-gun for a tune-up after gave up three runs (all earned) over five plus innings during his last start on May 6 against Yomiuri at Nagoya Dome. However, Ono asked for a chance to work through his issues by pitching out of the bullpen. Shigekazu Mori agreed to the request and will try to give him as many opportunities as possible to pitch in relief.
Ono has made two relief appearances during his career.
Source: Nikkan Sports 5/8/2017