Prospect Baseline Prospect Baseline
Model Last Run Sep 24, 2026 · 8:41 AM ET

Included in the latest imported public model. All figures reflect the saved assessment dates.

Player profile

Gage Ziehl

BOS · AAA · P

Boston Red Sox · Age at assessment: 23.4 · Bats: R · Throws: R

Results Ahead of Tools
Compare
Assessment saved: · Stats updated:

Command results ahead of the tool grade

Current strike throwing is outperforming the verified command expectation

High Confidence · 99%
PB Rank#95
Prospect Score75
Median71
Performance64
Trend0.0%

Why the player is here

  • Command 60; command evidence sits near the 82th percentile for comparable pitchers
  • BB/9 is 1.8

Context for this assessment, not a verified explanation for movement between model runs.

Tool vs observed results

Percentile scale
Stuff+15.2 percentile gap
Expected 50 Observed 65
Command+15.6 percentile gap
Expected 67 Observed 82

Verified tool expectations alongside results for comparable players. Percentiles are not scouting grades.

Model history

Median movement
First recorded 57 Latest recorded 71
76 64.5 53 2026-06-04 · Median 57 2026-06-05 · Median 57 2026-06-06 · Median 57 2026-06-07 · Median 57 2026-06-08 · Median 61 2026-06-09 · Median 61 2026-06-10 · Median 61 2026-06-11 · Median 61 2026-06-12 · Median 61 2026-06-13 · Median 61 2026-06-14 · Median 60 2026-06-15 · Median 60 2026-06-16 · Median 60 2026-06-17 · Median 61 2026-06-18 · Median 61 2026-06-19 · Median 61 2026-06-20 · Median 65 2026-06-21 · Median 65 2026-06-22 · Median 65 2026-06-23 · Median 65 2026-06-24 · Median 65 2026-06-25 · Median 65 2026-06-26 · Median 65 2026-06-28 · Median 65 2026-06-29 · Median 65 2026-06-30 · Median 65 2026-07-01 · Median 65 2026-07-03 · Median 67 2026-07-05 · Median 67 2026-07-07 · Median 67 2026-07-09 · Median 66 2026-07-11 · Median 62 2026-07-12 · Median 62 2026-07-14 · Median 62 2026-07-16 · Median 62 2026-07-21 · Median 64 2026-07-22 · Median 64 2026-07-23 · Median 64 2026-07-24 · Median 64 2026-07-25 · Median 64 2026-07-26 · Median 63 2026-07-27 · Median 63 2026-07-28 · Median 63 2026-07-29 · Median 63 2026-07-30 · Median 63 2026-07-31 · Median 63 2026-08-01 · Median 63 2026-08-03 · Median 65 2026-08-05 · Median 65 2026-08-07 · Median 65 2026-08-08 · Median 59 2026-08-09 · Median 59 2026-08-10 · Median 59 2026-08-11 · Median 59 2026-08-13 · Median 59 2026-08-14 · Median 59 2026-08-16 · Median 62 2026-08-17 · Median 62 2026-08-18 · Median 62 2026-08-19 · Median 62 2026-08-20 · Median 69 2026-08-22 · Median 69 2026-08-23 · Median 68.9 2026-08-25 · Median 68.9 2026-08-27 · Median 64 2026-08-28 · Median 64 2026-09-01 · Median 66 2026-09-02 · Median 66 2026-09-03 · Median 66 2026-09-05 · Median 66 2026-09-06 · Median 66 2026-09-09 · Median 71 2026-09-14 · Median 71.7 2026-09-15 · Median 72 2026-09-16 · Median 72 2026-09-17 · Median 72 2026-09-18 · Median 72 2026-09-19 · Median 72 2026-09-21 · Median 71 2026-09-22 · Median 71 2026-09-24 · Median 71 2026-06-04 2026-09-24

2026-09-24 · Median 71

Saved median assessments. Gaps indicate unavailable or non-comparable observations.
View recorded values
DateMedian
2026-09-2471
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Metrics to follow

BB/9 1.8

Primary strike-throwing checkpoint

Definition

Walks allowed per nine innings pitched. Lower is generally better

WHIP 1.30

Tracks total traffic allowed

Definition

Walks and hits allowed per inning pitched. Lower is generally better

K-BB% 19.9%

Balances dominance against walks

Definition

Strikeout percentage minus walk percentage, a compact measure of pitcher dominance and control

Next checkpointRecheck BB/9, WHIP, and K-BB% after the next 20 innings

2026 season

Current season · regular season
G25
IP122.0
ERA4.28
WHIP1.27
K/99.5
BB/91.8
K-BB%19.9%

2 teams · Total · All levels · Updated

Scouting Scenario Range

Model Range0.0%
677176
LowMedianHigh
206099
Performance 64

Profile Context

RiskLow Risk · 0
MLB / Model Watch74 signal Top 100 Watch
Confidence94
TypePitcher

Backtested Forecasts

Separate from scouting grades
2027 MiLB production51.5
Historical 80% error band29–74
MLB arrival in 3 years60%
Productive MLB role in 3 years11%

The next-season score assumes at least 20 IP. A productive MLB role means a regular playing-time season with above-average measured hitting or pitching production. This is not a WAR forecast.

Scouting Tools

Source: Verified public scouting report
Fastball icon
Fastball40Developmental
Slider icon
Slider50Avg
Cutter icon
Cutter50Avg
Changeup icon
Changeup50Avg
Command icon
Control60Above Avg
Overall icon
Overall40Developmental

Tool Profile

Tool ProfileFastballSliderCutterChangeupCommand20-80 grade scaleArchetype: Command Starter

Player Stats

Recent regular season
PeriodTeamLevelWLERAGGSSVIPHRERHRBBSOWHIPK/9
Last 7 daysAll teamsAll levels001.501106.04210130.834.50
Last 30 daysAll teamsAll levels114.4455026.125141343181.066.15
Year-by-year regular season
YearTeamLevelWLERAGGSSVIPHRERHRBBSOWHIPK/9
2026Worcester Red SoxAAA234.1788041.039211967331.127.24
2026Portland Sea DogsAA634.331717081.09142391318961.3510.67
20262 teams · TotalAll levels864.2825250122.0130635819251291.279.52
2025Somerset PatriotsAA009.001104.09441042.259.00
2025Hudson Valley RenegadesHigh-A102.251004.03110030.756.75
2025Winston-Salem DashHigh-A224.0166024.228151105201.347.30
2025Tampa TarponsSingle-A444.001414074.1764133614631.217.63
20254 teams · TotalAll levels764.1222210107.01166149719901.267.57

Regular season only. Totals combine team and level stints. Recent windows overlap and use cached game logs. Stats refreshed: 2026-09-24T08:35:32.

Checklist appearances

  • 2024 Bowman Draft · First Bowman · First autograph
Explore the checklist tool

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Organization reflects each player's saved assessment.