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Washington Nationals’ prospect Joan Adon one of youngest pitchers at Alternate Site...

After playing last year for Hagerstown, the right-hander ‘has come a long way,’ said Brad Holman …

Joan Adon photo via @MLBPipeline on Twitter.

WASHINGTON - In his last outing of the 2019 season, young right-handed pitcher Joan Adon, 22, started and allowed no earned runs in five innings against Red Sox farm team Greenville for the low Single-A South Atlantic League.

That capped off a successful campaign for the Dominican Republic-born pitcher, who was 11-3 with an ERA of 3.86 in 22 games with 21 starts for the Hagerstown Suns.

In a pro career that began in 2017 in the Dominican Summer League, Adon is 16-5, 3.85 though walks have been a problem with 75 in 163.2 innings.

Adon was able to further his development this season as part of the 60-player pool at the alternate site in Fredericksburg, Va. He was one of just a few Hagerstown players from last season that was able to spend time in camp with hitters that had Major League experience, such as Andrew Stevenson, Jake Noll, Wilmer Difo, and Brandon Snyder.

“It was a great experience for him,” Mark Scialabba, assistant general manager, player development, told Federal Baseball on Monday. “He is a power arm that attacks the zone with his fastball, change, and slider. He does a really good of pitching up and down with his fastball and his change has become a weapon he can use against right and left-handed batters.”

“He has some high energy,” Brad Holman, the pitching coordinator in player development, said Monday. “He is a talent with a fastball in the mid-90s. He has come a long way since he came here” to Fredericksburg in mid-July.

The alternate site camp will wind down Tuesday and Wednesday and Scialabba said Adon is one of the pitchers slated to make the transition to the Instructional League setup at West Palm Beach, Florida later this week.

“We are really excited about the upside with Adon,” Scialabba said.