Weekly Update · Week 4 · Model v0.4

Extensions Close
The Clock.
The Model Updates.

McGonigle signs for $150 million after 17 games. Emerson is at Tacoma with his clock already running. Bazzana is posting .222 while Cleveland promotes someone else. Four prospect clocks moved this week. Here is what changed and why.

Apr 9 · PPI Deadline
May 1 · Svc Time Windows (Next)
May 29 · Week 10
Jun 18 · 90-Day Resolution
11
CUP Resolved
9
Open Predictions
4
CUP Changes
63
Days to Jun 18
Extensions, Week of April 17
Kevin McGonigle
DET · INFAge 21MLB Active
CUP Resolved 8yr / $150M
.311
AVG (17 G)
.417
OBP
.492
SLG
11 / 8
BB / K

Detroit announced an eight-year, $150 million extension with McGonigle on April 15, covering the 2027–2034 seasons. The deal begins next year, McGonigle remains on the league minimum in 2026, and includes a $14 million signing bonus paid up front. Escalators tied to MVP voting and All-Star selections can push the total to $160 million. The deal covers the final five years of club control and buys out three years of free agency McGonigle would have reached in 2031.

Through 17 games, McGonigle is slashing .311/.417/.492 with 11 walks against eight strikeouts. His expected slugging of .546 ranks in the 90th percentile of MLB hitters. He collected four hits in his MLB debut and has reached base in 15 of his first 17 games. Detroit is 8-9 after a slow start.

The CUP model scored McGonigle as Active (resolved) at Opening Day. The extension is a model-independent development but confirms the structural thesis: Detroit viewed the service time clock as irrelevant once an extension was possible. He becomes the fourth top prospect to sign a major extension since late March, joining Konnor Griffin ($140M/9yr, PIT), Colt Emerson ($95M/8yr, SEA), and Cooper Pratt ($50.75M/8yr, MIL).

Model note: CUP resolved YES at Opening Day. Extension post-dates the resolution window. No model revision required. McGonigle remains on the calibration log as a resolved correct prediction.
Open Predictions, CUP Changes This Week
Travis Bazzana
CLE · 2BAge 23Triple-A Columbus
35% CUP ECD May 14
.222
AVG (Season)
.333
OBP
.333
SLG
9 / 11
BB / K

Bazzana is slashing .222/.333/.333 in Triple-A Columbus through the first 16 games of the season, with two doubles, two triples, and an OPS of .666. He went through an eight-game stretch hitting .176 with a wRC+ of 62. His exit velocity, Hard-Hit%, wOBA, and xwOBA are all in the below-average range on his advanced metrics report.

Cleveland passed on Bazzana when Gabriel Arias went on the injured list with a hamstring strain, promoting infield prospect Juan Brito instead. The decision reflects the slow start. Recent production has been more encouraging: he went 2-for-4 on April 12 against Worcester with two singles registering at 99+ mph off the bat, including a 110.3 mph single. The underlying contact quality is moving back toward his profile from late 2025, when he posted a 1.163 OPS in 31 at-bats at Triple-A.

Manager Sandy Vogt has indicated a May or June window. The ECD of May 14 via Pathway A remains the model's base case. The Arias IL stint opened a path; Cleveland chose a different player, which is a concrete signal that the slow start matters to the organization. CUP holds at 35%. Watch the contact quality metrics over the next two weeks.

Model note: CUP 35%, ECD May 14. No revision this week. The Arias IL opportunity was available and not taken. That is a negative data point but within expected variance for this ECD window. The Vogt May/June signal remains intact. Reassess at May 1 checkpoint.
Zac Veen
COL · OFAge 24Triple-A Albuquerque
28% CUP Optioned
.118
MLB AVG
37.8%
K Rate (MLB)
4-34
H-AB (MLB)
.424
OPS (MLB)

Veen debuted with Colorado earlier this season and went 4-for-34 with a 37.8% strikeout rate across 12 MLB games before being optioned back to Triple-A Albuquerque. Brenton Doyle's return from the bereavement list was the procedural trigger, but the performance made the decision easy. He slashed .118/.189/.235 in his MLB stint.

This is the same outcome as Veen's 2025 MLB debut: a brief cup of coffee that ended with an option back to Albuquerque. In both cases the plate approach deteriorated under major league velocity, with pitchers successfully attacking his hands and finishing him with breaking balls. The swing mechanics that generate power also create swing-and-miss at the highest level when pitchers locate their fastball inside.

Veen remains on the 40-man. Colorado's org coefficient of 1.02 is the highest in the model and the Rockies will recall him again when a roster spot opens. The question is whether the second MLB stint produces different results. The 28% CUP is unchanged. The ECD of April 16 has elapsed; the next realistic window is a mid-May recall.

Model note: CUP 28%, ECD revised to mid-May window after April recall ended. COL org coefficient (1.02) is the primary driver keeping CUP elevated despite the performance. A second MLB stint is probable this season. Watching for approach adjustments at Albuquerque before the next recall.
Aidan Miller
PHI · SS/3BAge 21Triple-A IL
10% CUP ↓ Swinging a Bat
0
2026 Games
No TL
Return Date
.825
2025 OPS
.264
2025 AVG

The most encouraging update this week on Miller: Phillies president of baseball operations Dave Dombrowski confirmed that Miller has begun swinging a bat. That is the first concrete progress marker since Miller began the season on the Triple-A injured list with lower back soreness. He has not played a game in 2026. No timeline has been given.

Miller dealt with the same back issue late in the 2025 season, which caused him to skip the Arizona Fall League. The recurrence in spring training eliminated any chance at an early-season call-up. Philadelphia has handled him cautiously and correctly: the injury has no structural component per Miller and team doctors, but repetitive stress injuries in the lumbar region require patience to avoid re-aggravation.

Dombrowski confirmed Miller has progressed to rotational exercises and is now swinging a bat, though the step after that, baseball activities in the field, has no timetable. The model CUP dropped from 22% at the March 20 run date to 10% to reflect the lost time. The June 18 calibration checkpoint remains the relevant resolution date. A healthy Miller posting strong Triple-A numbers before June 18 would push CUP back up.

Model note: CUP revised to 10% from original 22%. ECD pushed to Jun 1 window. The back injury suppressor applied at run date correctly flagged this risk. Swinging a bat is the first positive signal since March. Reassess when Miller returns to game action.
Jett Williams
MIL · SS/OFAge 22Triple-A Nashville
24% CUP Not on 40-Man
.867
2025 OPS (AA)
.209
2025 AVG (AAA)
5-12
Spring (MIL)
No
40-Man

Williams is at Triple-A Nashville after being optioned to start the season. He arrived in Milwaukee via the Freddy Peralta trade from the Mets, went 5-for-12 in six spring training games with the big-league club, then missed significant time with a left quad injury. He was cleared to return before the end of spring training but was not on the 40-man roster, and Milwaukee had signed Luis Rengifo to cover the infield.

The path to Milwaukee remains clear on paper. Shortstop Joey Ortiz struggled offensively in 2025. Third base is unsettled following the trade of Caleb Durbin to Boston. Williams has demonstrated the ability to play shortstop, second base, and is working on third base. Manager Pat Murphy has called him a near-term option if the infield situation creates an opening. The model's primary gating event remains the 40-man addition, which Milwaukee has not yet made.

Williams posted an .867 OPS over 96 games at Double-A Binghamton in 2025 before struggling at Triple-A Syracuse (.209/.285/.433 in 151 plate appearances). The transition to Triple-A velocity is the relevant development question. His 90th-percentile exit velocity of 103.4 mph is close to MLB average, suggesting the tools are there. Plate discipline and swing decisions at Nashville will determine whether the May window opens.

Model note: CUP 24%, ECD Apr 16 window elapsed, next realistic window late April to May. The 40-man roster addition remains the primary gating event. Without it, Milwaukee cannot recall him regardless of performance. No CUP revision this week.
Thomas White
MIA · SPAge 21Triple-A Jacksonville
27% CUP PPI Forfeited
2.31
ERA (2025)
89
IP (2025)
145
K (2025)
5.1
BB/9 (2025)

White missed the PPI deadline due to an oblique injury that kept him off the mound during spring training. The April 9 deadline has passed. He is the Marlins' top prospect and ranked ninth on the FanGraphs Top 100 at the start of the season. His 2025 numbers across 21 starts were legitimate: 2.31 ERA, 145 strikeouts, 89 innings, producing 14-strikeout games at Double-A before a September promotion to Triple-A Jacksonville.

White overhauled his mechanics this offseason, extending his stride by nearly a foot and returning to a lower arm slot with high extension. He targets 18-to-20 inches of induced vertical break on his fastball, which sits in the upper 90s. The changeup and sweeper give him two swing-and-miss secondary offerings. Command has been the developmental variable: a 5.1 BB/9 in 2025 is high for a pitcher with his stuff, and the mechanical adjustments are aimed specifically at fixing that.

Miami's rotation is thin. If White clears the oblique injury and posts numbers at Triple-A Jacksonville consistent with his 2025 profile, a promotion window opens in May. The model's May 7 ECD remains the base case pending confirmation he is pitching in games.

Model note: CUP 27%, ECD May 7. PPI downgraded from High to None at the April 9 checkpoint. CUP adjusted for the PPI multiplier removal. Monitoring for Jacksonville rotation news confirming White is active and healthy.
Resolved, No Model Changes

Eleven predictions are resolved as of this update: Konnor Griffin (PIT, debut Apr 2, resolved YES), Carson Benge (NYM, Opening Day, resolved YES), Samuel Basallo (BAL, Opening Day, resolved YES), Parker Messick (CLE, Opening Day rotation, resolved YES), JJ Wetherholt (STL), Andrew Painter (PHI), Nolan McLean (NYM), Chase DeLauter (CLE), plus McGonigle (DET), and two additional resolved players from the Opening Day roster. All 11 are logged in the calibration log with dates and binary outcomes.

The model's 11 resolved predictions at the four-week mark represent a 40.7% binary resolution rate against a 90-day window. That is ahead of the expected pace. The June 18 calibration checkpoint will calculate the Brier score across all 27 predictions.

Calibration, Model Performance Through Week 4

All predictions are immutable at the March 20 run date. The model does not update CUP scores retroactively. What changes in the weekly update is the interpretation of current facts against the original predictions. The full calibration log records every resolved outcome against the original probability, which will produce the Brier score on June 18. Read the methodology for how the three-multiplier stack operates and how Pathway A, B, and C predictions differ in confidence range.

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McGonigle, $150M Ext Bazzana, .222 AAA Veen, Optioned Miller, Swinging a Bat Williams, Nashville White, PPI Forfeited