Roster player dossier · Almanac edition
Arizona Diamondbacks · bats R
Merrill Kelly.
Season production, recent form, handedness splits, and role context. Descriptive only—no live recommendation is shown here.
MLB.com profile ↗What matters now
PRO DECISION CONTEXT LOCKED
Public stats remain descriptive. Live probability, price, Action Window, and Decision state are available only after the Pro access check.
Whiff rate is steady across 270 recent pitches versus a non-overlapping baseline.
Completed performance and hot form remain supporting evidence; neither creates a Posterior Decision on its own.
00 / Public almanac
Season stats and recent form · descriptive, not predictive.
2026 pitching line
Run prevention and workload.
IP
120.0
2026 innings
ERA
4.88
earned runs
WHIP
1.47
walks plus hits
FIP
5.54
fielding independent
K/9
6.0
strikeouts per nine
BB/9
3.8
walks per nine
K / BB
80 / 50
strikeouts / walks
HR
23
home runs allowed
BF
519
batters faced
Savant and arsenal
Expected contact, splits, and pitch shape.
xERA
00.2 / Career lines
Season-by-season record · descriptive, not predictive.
Pitching · 8 seasons
MLB regular season
| Season | Tm | G | GS | IP | ERA | WHIP | K/9 | BB/9 |
|---|---|---|---|---|---|---|---|---|
| 2026 | ARI | 21 | 21 | 120.0 | 4.88 | 1.47 | 6.00 | 3.75 |
| 2025 | TEX | 10 |
00.3 / Last 12
Current performance across roughly four series · descriptive, not predictive.
Pitching · last 12 games
| Date | Opp | IP | H | R | ER | BB | K |
|---|---|---|---|---|---|---|---|
| 8/7 | vs LAD | 5.2 | 2 | 1 | 1 | 4 | 4 |
| 8/2 | @ CLE | 5.0 | 8 | 5 | 5 | 4 | 5 |
00.4 / Statcast card
Season percentile ranks vs. the qualified MLB pool · descriptive, not predictive.
Statcast season card · 2026 · Pitching
Elite barrel contact with a poor run prevention.
Posterior percentiles vs. qualified MLB pool · Statcast window Apr 24 – Aug 7 · context only
Expected run prevention
xERA
2
6.94
Contact allowed
Barrel %
87
10.7%
Hard-Hit %
85
28.1%
Avg. Exit Velo
00.5 / Statcast form
Nightly Statcast trends · descriptive, not predictive.
Statcast form · Whiff and command
Whiffs and command are holding steady.
Posterior Statcast graph · through 2026-08-08 · context only
Whiff rate
24.2%
Baseline 16.0% · Δ +8.2%
Zone rate
39.8%
Baseline 44.0% · Δ -4.2%
Average velocity (mph)
88.6 mph
Baseline 89.7 mph · Δ -1.1 mph
Recent window
270
vs 711 baseline pitches
STEADY · recent vs non-overlapping baselineAs of Aug 9, 2026
Statcast form — descriptive fan context from the point-in-time Statcast graph, not a betting recommendation. It does not move any Posterior probability.
01 / Pro decision context
Live prediction and price fields remain locked.
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