The baseball career of Bostons pitching prospect and Navy graduate Noah Song is on hold.

On of the top professional sports prospects from the service academies, Song does not expect to continue his baseball career for the near future after the Navy said on Tuesday they would not allow him a waiver to defer his service.

A recent policy announcement from President Donald Trump and defense secretary Mark T. Esper allows academy graduates to postpone their service in order to pursue professional sports. Song, who was drafted by Boston in the fourth round of the 2019 draft and spent the summer playing in the Red Sox minor league system for the Lowell Spinners, is not eligible for the new policy, which goes into effect for the class of 2020. Song graduated from the Naval Academy in May, and thus does not fall under the newly implemented policy.