Jarlin Susana’s Arizona Fall League assignment comes with the kind of thunder that makes scouts lean forward.
A week after he uncorked a 104 mph first-pitch fastball in the Triple-A National Championship in Las Vegas, the Nationals’ No. 4 prospect arrived in Scottsdale talking about what a strong six weeks with the Salt River Rafters would look like. The answer fit the arm.
“It wouldn’t be a normal Susana,” he said via interpreter Chanel Zapata. “It would be Don Susana.”
That kind of confidence makes sense for a 22-year-old right-hander who is already one of baseball’s hardest throwers. Susana’s 104 mph heater to Oklahoma City catcher Ben Rortvedt on Sept. 26 was the fastest pitch recorded by a Washington or Rochester pitcher in a regular season or postseason game in the Statcast Era, which dates back to 2015. Over two scoreless innings out of Rochester’s bullpen, he followed that up with nine more pitches between 103 and 103.8 mph - seven four-seamers and two sinkers - filling out Nos. 2 through 10 on that franchise leaderboard in one night.
The Fall League is usually a place for top arms to get a little extra work before the offseason. Susana is there for a different reason.
He missed much of the summer after lat surgery last year, then returned to game action in mid-August and finished the year with just 22 1/3 innings split between High-A Wilmington, Double-A Harrisburg and Triple-A Rochester, including the playoffs. His longest outing was 3 2/3 innings for Harrisburg on Sept. 12, so there’s still room for him to build up his workload as well as his stuff.
The arm strength is obvious. So is the slider, an upper-80s pitch that gives hitters another problem when they’re already geared for the fastball. That combination is a big reason Susana sits at No. 66 on MLB Pipeline’s Top 100.
The bigger question has always been the strike zone. That’s the piece Susana has to sharpen if he wants the rest of this to really take off, and he knows it. His AFL goals weren’t complicated.
“They told me to stay the same,” Susana said. “I was good before.
I’m still good now. Just making sure I do minor adjustments with how I position my arm, but otherwise, stay the same.
I’m still the same me.”
For the Nationals, Susana is part of a larger wave of young talent moving through the organization under president of baseball operations Paul Toboni’s front office. He’s also one of the most fascinating examples of where the player-development approach is headed.
Washington’s current group is far more focused on helping pitchers add velocity and build Major League-caliber stuff, even if the road includes some bumps. Susana doesn’t need extra speed.
He already has more than enough.
The Nationals’ AFL contingent also includes several hitters trying to make their own case in the desert.
Teo Banks, an 18th-round pick out of Tulane in 2024, spent his second full season at High-A Wilmington and hit .251/.333/.375 with six homers and a 90 wRC+ over 312 plate appearances. He added 21 steals in 28 attempts and played all three outfield spots during his career, though this season he mostly worked the corners.
Kevin Bazzell, the Nationals’ third-round pick in 2024 and the No. 55 talent in that draft, has trailed fellow 2024 pick Caleb Lomavita on the catching depth chart, but he kept putting the bat on the ball. He hit .287 with a 14.8 percent strikeout rate in 66 games between High-A and Double-A, then showed more pop this summer after going homerless in 84 Single-A games in 2025, finishing with nine. He also threw out 33.3 percent of attempted basestealers with Harrisburg.
Jorgelys Mota brings a different kind of intrigue. The OF/3B has plus-plus raw power and plus speed, and Washington fans have already seen some of the damage in spring, when he posted the highest exit velocity by a Nationals player at 115 mph and the longest homer at 434 feet.
The issue is the hit tool, which remains a major question after he made contact on just 57.1 percent of his swings in 24 games with Wilmington this summer. The Nationals also gave him time in center field this year after originally bringing him up as a third baseman.
On the pitching side, Noah Dean is a lefty with a fastball-slider mix and a control track record that has followed him into the Nationals system. The 2022 fifth-round pick was released by Boston on March 19 and signed by Washington 11 days later, then allowed 11 earned runs in 11 innings over 10 appearances for Harrisburg while striking out 15 and walking 14. His fastball sits 93-95 mph, and his 85-88 mph slider is his best swing-and-miss pitch.
Nolan Hughes, a 2024 16th-rounder out of Xavier, has battled both command issues and availability. Over the last two years in Single-A, he walked 10 batters in seven innings. Still, the 6-foot-5 lefty has size and velocity, with a fastball that can reach the upper 90s and a mid-80s slider that drew whiffs on 12 of 19 swings in a small Fredericksburg sample earlier this year.
Owen Puk rounds out the group. The right-hander, who is the brother of D-backs reliever A.J.
Puk, joined the Nationals as an 18th-round pick out of Florida International last year and made only three relief appearances for Fredericksburg in April before heading to the Fall League to catch up on innings. In college, the 6-foot-5 Puk worked mostly with a fastball that reached 97 mph and a low-80s breaking ball designed to miss bats and chase.
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