He was successful in his rookie year , pitching as the setup man for closer Kazuhiro Sasaki , but problems with control led the BayStars to drop him in 2001 .
Kohiyama was drafted in the first round of the 1992 amateur draft by the Yokohama BayStars .
Kohiyama was successful in Kohiyama 's rookie year , pitching as the setup man for closer Kazuhiro Sasaki , but problems with control led Yokohama BayStars BayStars to drop him in 2001 .
Kohiyama was drafted in the first round of the 1992 amateur draft by the Yokohama BayStars .