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Big Hype Prospects: Veen, Sheehan, Kjerstad, Mervis, McLain

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Big Hype Prospects continues with a look at the early results from the Arizona Fall League. This is, historically, a hitter-centric league so it will come as no surprise that the best early performers are mostly position players.

Five Big Hype Prospects

Zac Veen, 20, OF, COL (AA)
AFL: 31 PA, 1 HR, 7 SB, .455/.581/.636

Veen has posted video-game numbers, especially on the basepaths. During the regular season, he stole 55 bases in 64 attempts (541 plate appearances). He’s upped the ante in Arizona, swiping a league-leading seven bags in eight attempts. Veen’s biggest statistical weakness is an elevated swinging strike rate. To close out the season, he posted a 15 percent swinging strike rate at Double-A while batting .177/.262/.234 in 141 plate appearances. His early rebound at the fall league is an encouraging sign.

Emmet Sheehan, 22, SP, LAD (AA)
AFL: 6 IP, 5 K, 2 H, 2 BB, 2 HBP, 0.00 ERA

One of only a few pitchers with serious clout in the AFL, Sheehan has held opponents scoreless through two appearances. He’s presently on the cusp of Top 100 prospect status for many evaluators. The Dodgers consistent ability to get the most out of their pitching prospects certainly contributes an added hint of optimism.

Command is the limiting factor for his development, and it happens to be the only thing he’s struggled with thus far in Arizona. Sheehan’s repertoire is a tad unusual. While a fastball-curve-changeup trio sounds vanilla, he’s a right-hander whose best pitch is a changeup. His fastball and curve tunnel well and can have upwards of 20-mph of separation. Scouting reports tend to downplay his curve when viewed on its own, but the pitch seems to play up within his repertoire.

Heston Kjerstad, 23, OF, BAL (A+)
AFL: 40 PA, 3 HR, .368/.400/.711

The second-overall pick of the weird 2020 draft, Kjerstad missed all of 2021 due to heart inflammation. He finally made his minor league debut this season. He steamrolled Low-A pitchers in 98 plate appearances then struggled versus High-A opponents. Since he’s missed so much time, his performance in the AFL will have more influence on how evaluators view him than most other participants. Presently, he’s tied for the league lead with three home runs. Notably, he’s also struck out 10 times which is right on par with his strikeout rate in High-A.

Matt Mervis, 24, 1B, CHC (AAA)
AFL: 21 PA, 3 HR, .263/.333/.842

The co-leader in home runs is Mervis. He’s accomplished the feat in 19 fewer plate appearances than Kjerstad. Mervis spent the regular season climbing from High- to Triple-A. Along the way, he hit 36 home runs in 578 plate appearances. His plate discipline and contact rates improved at every level, culminating in a 10.4 percent walk rate, 14.6 percent strikeout rate, and 8.7 percent swinging strike rate in Triple-A. He’s a classic pulled contact, fly ball masher built for the height of the juiced ball era. He should arrive in Chicago early next season. He’ll enjoy Wrigley Field when the winds are blowing out.

Matt McLain, 23, SS, CIN (AA)
AFL: 30 PA, 2 SB, .200/.467/.250

A talented middle infielder now overshadowed by Elly De La Cruz and Noelvi Marte, McLain could make a case for a quick promotion to the Majors with a strong showing this fall. To date, he’s shown epic patience, working a league-leading 10 walks in just 30 plate appearances. He’ll need to show a stronger knack for making quality contact, whether in play or over the fence. His 2022 campaign at Double-A was characterized by plenty of discipline (15.5 percent walk rate), decent power (.221 ISO), and a poor .232 batting average. While batting average isn’t tightly related to production, most quality prospects tend to post high averages in the minors.

Five More

Joey Wentz, DET (24): It’s uncommon but not entirely unheard of for players with Major League experience to play in the AFL. Wentz pitched 32.2 effective innings with the Tigers, including a 3.03 ERA (4.56 xFIP). He missed the early portion of the season, so he’ll make a few extra starts to further build his workload. A former 40th-overall pick, Wentz threw four perfect innings in his first AFL appearance.

Luisangel Acuna, TEX (20): Acuna lacks the same raw tools as his talented older brother, but his development has progressed encouragingly nonetheless. He reached Double-A as a 20-year-old. He has picked up where he left off in the AFL, batting .300/.323/.633 with a pair of home runs in 31 plate appearances. Don’t worry about the low walk rate, his discipline might be his carrying trait.

Nick Yorke, BOS (20): After a poor regular season campaign, Yorke is looking to put his name back on the map with a hot finish. Thus far, he’s hitting .300/.410/.400 in 39 plate appearances. He’s yet to homer or steal a base. He has, however, worked six walks compared to six strikeouts. In High-A, his strikeout rate was three times higher than his walk rate.

Zack Gelof, OAK (22): Gelof is well-regarded by Athletics personnel, though his on-field results weren’t ideal. He finished the year on a power-binge in Triple-A, blasting five home runs in 38 plate appearances. He blasted two home runs on Thursday, his first of the AFL season. Overall, he’s batting .259/.355/.481.

Jordan Lawlar, ARI (20): Although he sputtered statistically to end the season in Double-A, scouting reports continually put Lawlar in the discussion for the number one prospect. In 32 plate appearances, he’s hitting .333/.500/.667 with two home runs and three steals in four attempts. 2023 is his age 20 season, and there’s an outside chance he’ll debut. A hot AFL would help those odds.

NL Notes: Cubs, Nationals, Marlins

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Chicago Cubs veteran starter Wade Miley left yesterday’s game with left oblique tightness after fielding a bunt, according to MLB.com. Miley, who will be 36 next season, has had a frustrating, injury-filled season. The southpaw started the season on the 10-day injured list with left elbow inflammation and dealt with an additional left shoulder strain before being activated in early May. He would make three starts in May before being faced with injuries again, eventually being placed on the 60-day injured list with a left shoulder strain in June.

The Cubs’ acquisition of Miley via waivers from the Cincinnati Reds in the offseason was rather noteworthy, as the lefty came with a $10MM salary for the 2022 season and the Cubs were not considered contenders entering the 2022 season. Miley was coming off a rather productive four-year stretch, posting a 3.53 ERA in 425 1/3 innings and making 81 starts, albeit with a low 18.0% strikeout rate and an average 8.1% walk rate. However, Miley ranked highly in his ability to miss bats; he was in the 95th percentile for Average Exit Velocity, 83rd percentile for HardHit%, 75th percentile for Barrel %, and 77th percentile for Chase Rate in the 2021 season. With the Cubs out of contention for the 2022 playoffs and Miley a free agent at the end of the season, the Cubs may decide to end his season early and give starts to players fighting to make the starting rotation in the spring.

Elsewhere in the National League:

  • The Cubs have been searching for Anthony Rizzo’s heir, and they might have found it, reports Patrick Mooney of the Athletic. First baseman Matt Mervis has had a remarkable 2022 season. Beginning in High-A South Bend, the 24-year-old mashed pitchers to the tune of .350/.389/.650 with a 1.039 OPS in 100 at-bats before being promoted to Double-A Tennessee. Mervis picked up right where he left off, slashing .300/.370/.596/.966 with 14 home runs in 203 at-bats, earning a promotion to Triple-A Iowa and continuing to punish pitchers, posting a .297/.387/.595 slash line for a .982 OPS with another 14 home runs in 195 at-bats. On the heels of this dominant showing throughout the Minors, Cubs manager David Ross has been rather coy on the Cubs’ plans for Mervis, stating that “there’s no doubt that he’ll have a great opportunity in front of him moving forward”  and that Mervis is “definitely on the radar.”
  • As Washington Nationals’ rookie pitcher Josiah Gray wraps up his 2022 season, the Nationals are keeping a close eye on his innings count and have hinted at the possibility of shutting him down early, as reported by MLB.com. Coming to the Nationals from the Los Angeles Dodgers as part of the Trea Turner and Max Scherzer trade in 2021, Gray has shown flashes of brilliance and growing pains. Cumulatively, Gray has pitched to 5.17 ERA (27 starts) in 142 2/3 innings with an above-average 24.2% strikeout rate and a high 10.4% walk rate. However, these numbers do not explain the whole story, with Gray posting a 1.13 ERA in June (24 innings) and only allowing 13 hits and 3 earned runs. However, in July, Gray pitched to a 6.75 ERA (26 2/3 innings), giving up 30 hits and 20 earned runs. With the Nationals at the bottom of the NL East, they may turn their focus to the 2023 season and give Gray an extended offseason in preparation for his age-25 season.
  • In other Nationals news, southpaw MacKenzie Gore, who was acquired in the Juan Soto and Josh Bell blockbuster at the trade deadline, is working back from his left elbow inflammation, according to MLB.com. Gore has been on the injured list since July 26 and is currently continuing his rehabilitation in Triple-A Rochester. The Nationals are hoping that the 23-year-old will make at least one big league start with the team before the end of the season, and plan to have him throw 75-plus pitches in his next rehab start.
  • The Miami Marlins’ rebuild has yet to bear any fruit, and the team may be adjusting its roster for the 2023 season. Having traded Giancarlo Stanton, Christian Yelich, J.T. Realmuto, and Marcell Ozuna in the span of a few years, fans were aware that the team was entering a rebuild. However, the rebuild has yet to show any moderate signs of success. After making the postseason in 2020, the Marlins seem destined to finish the season below .500 for the twelfth time in the last thirteen seasons. An article by Barry Jackson of the Miami Herald reports that the Marlins view former first-rounder JJ Bleday as a “serviceable starter or platoon outfielder” and that “he does not project as a full-time center fielder.” Since a late July callup, Bleday has posted a measly .169/.285/.305/.590 slash line in his first MLB season with an inflated 28.5% strikeout percentage but with a high 13% walk rate. In a similar thought, the Marlins are “no longer counting on ” Lewin Díaz as their everyday first baseman because of his poor offensive performance. In his third season of Major League action, Díaz has posted a .163/.223/.281/.504 slash line in 148 plate appearances. Importantly, Díaz has seen an increase in his strikeout percentage and is fanning at a 30.4% clip and only walking at 6.8%.

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