Signed by Washington out of the Dominican Republic for $50K in July of 2016, right-hander Joan Adon started out at High-A in the Nationals’ system this season, and he made jumps to Double-A Harrisburg and then to the club’s top affiliate, Triple-A Rochester, over the course of the year, before he was called up to start the regular season finale in the nation’s capital.
Adon, 23, posted a 4.97 ERA in 17 starts and 87 innings at High-A, a 6.43 ERA in three starts and 14 IP at Double-A, and struck out seven batters over four scoreless in his Triple-A debut, giving up two hits and three walks before he was called up to make his final start of the year in Washington, D.