Locally Sourced Arizona Fall League Notes: Tre’ Morgan’s Skills, Caleb Durbin Branches Out

Travis Ice and I have begun early work on the Los Angeles Angels and Sacramento Athletics prospect lists, and because both franchises’ prospects are on the Mesa Solar Sox roster, I spent most of last week seeing whatever game they were playing.

At this point in the Fall League, the leaders in games played have laced up their spikes only eight or nine times. Anything you’ve read about this year’s AFL so far has encompassed just two weeks of part-time play for any given player. Remember this is a hitter-friendly league for a number of both developmental and environmental reasons, and that triple slash lines in this league are not a reliable proxy for talent.

Tre’ Morgan, 1B, Tampa Bay Rays

Offensive standards at first base are quite high, and even though the collective performance of this year’s group was down relative to recent norms (by kind of a lot), it’s still a position from which we expect good players and prospects to provide impact power. Morgan has been a relevant prospect since high school, but a relative lack of power has tended to cap his projection into more of a part-time first base/outfield role.

During the 2024 regular season it looked like Morgan was more often taking max-effort swings and selling out for power. He reached Double-A and slugged .483 across three levels, but his middling raw strength and opposite-field tendency as a hitter (plus elevated chase rates relative to his career norms) suggested this was maybe not the best approach for him. In the Fall League, Morgan has been more balanced, really taking enormous hacks only in favorable counts. He’s still stinging the ball in a way that indicates he’ll be a doubles machine, and he seems less vulnerable to fastballs up and away than he did during the summer. We don’t have a way of truly knowing how Morgan will handle elevated big league fastballs until he faces them, but a more balanced, contact-oriented style of hitting is going to give him a much better chance of covering the top of the zone and being a more complete hitter. (An aside: Watch A’s prospect Denzel Clarke go first-to-third at the video’s 1:55 mark.)

I think the absolute ceiling for his production looks something like Brandon Belt’s or Daniel Murphy’s pre-Juiced Ball era statline. More likely Morgan’s output will look something like Ji Man Choi’s or LaMonte Wade Jr.’s. Morgan is not a guy who is going to hit 20 homers per year, but a heady, well-rounded offensive skillset coupled with his excellent, profile-seasoning first base defense make him better than the 40 FV grade player I evaluated him as during the year. He is making a case to be elevated into the back of this offseason’s Top 100 list.

Caleb Durbin, UTIL, New York Yankees

I gave Durbin short shrift last year even after his .353/.456/.588 line in the 2023 Fall League. He had a good 2024 at Triple-A Scranton, including a strong second half after he returned from a fractured wrist. Durbin is short — really short, he’s 5-foot-6 — but he’s not small; he’s built like a little tank. His compact, stocky build helps keep his swing short and consistently on time to pull the baseball. His quality of contact in 2024 was commensurate with a guy who slugs under .400 at the big league level, but he was dealing with an injury that typically impacts contact quality for a while after recovery.

Perhaps most importantly, Durbin looks fine at both second and third base and has also been playing all over the outfield. Defensive versatility might be his key to being rostered consistently. Durbin ran a jailbreak 4.10 for me last week, but his home-to-first times have been close to 4.4 seconds on normal swings. That’s not blazing and slower than what’s typical of a decent center fielder, but any kind of outfield viability would help the former Division-III standout become an improbable big leaguer. Durbin has played sparingly in center field during his career, and it’s going to be very difficult to evaluate him there this Fall League unless he starts getting reps there every day, which I think is unlikely. It’s more of a thing to watch develop into next spring.

Kemp Alderman, OF, Miami Marlins

Alderman, a 2023 second round pick out of Ole Miss who had some of the best exit velocities in that draft class, is currently leading the AFL with six home runs. He hit one on Friday at a whopping 119.5 mph. It went out on a line, ricocheting off the side of the batter’s eye, which you can see in this frame:

Friday, Marlins outfielder Kemp Alderman hit a homer that left Salt River Fields in a real hurry, at 119.5 mph. pic.twitter.com/HBvj2F0oud

— FanGraphs Prospects (@FG_Prospects) October 22, 2024

Like Durbin, Alderman missed time in 2024 with a broken hand. It’s good to see Alderman hitting with elite peak power coming off of this particular injury, but I’d advise everyone to pump the breaks on his overall prospectdom at this time. He loads his hands so deep, high, and late that I worry he’ll struggle against better velocity as he climbs the minors. Though Alderman’s regular-season strikeout rates don’t raise alarm, I don’t think 30-ish games at each A-ball level is a meaningful sample, especially for a draft pick out of an SEC school. It’s fine to be hopeful that I’m wrong or that Alderman will make necessary adjustments once better stuff starts beating him, and he clearly has the power to clear the offensive bar at a corner outfield spot. But even though he’s raking out here, he does not have an opinion-altering look. I know Marlins fans have gone through this a lot lately, where they have a minor leaguer with elite power but an insufficient hit tool to profile (Peyton Burdick, Griffin Conine, Jerar Encarnacion), and I worry Alderman is another of this ilk.

Devin Kirby, RHP, Minnesota Twins

Alert Ben Lindbergh, we have a knuckler. The 25-year-old Kirby was an undrafted free agent out of UConn in 2023 and spent most of 2024 in Fort Myers either on the Complex or FSL roster. His knuckleball needs to be more consistent for him to be considered a prospect at all, but for now it’s a lot of fun to watch a guy whose primary pitch is his knuckler.

The Arizona Fall League has a knuckleballer this year, Twins righty Devin Kirby. pic.twitter.com/Z6c7ik6vH4

— FanGraphs Prospects (@FG_Prospects) October 18, 2024

Board Additions

Ryan Birchard, RHP, Milwaukee Brewers
Henry Bolte, OF, Oakland Athletics

These players have had their scouting reports added to the Fall League tab on The Board. Head over there to check out their tool grades and scouting reports.