Players / Player profile
BOS · P

Sonny Gray

Age 36 B/T R/R 5′10″, 190 lb USA MLB debut 2013
40-man
  • Free agent est. 2 yr × $16.7M ($12M–$26M) if his mutual option is declined · +1.0 wins to Pittsburgh’s Winter Plan as its #4 starter
    2 cautions
    • Holds a $30.0M mutual option for 2027; one side almost always declines.
    • Big walk year: 3.4 WAR in 2026 against a 1.7-WAR projection. With the walk year at his projection the model would price him at $13.8M a year, not $16.7M. Last winter's 27 deals after such seasons came in about 8% under the estimate on average (± 13%): no clear premium or discount beyond what the model already pays.
  • Injured list 2026: Right hamstring strain (Apr 21–May 6)
Keystone Stuff 95 28th pct
2026 fWAR 3.4
Projected 2027 WAR 1.7 Keystone Marcel+ at 113 IP

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 2,474 pitches

Keystone Stuff 95 Keystone Stuff: 95, 28th percentile
Keystone Location 101 Keystone Location: 101, 60th percentile
Keystone Pitching 99 Keystone Pitching: 99, 48th percentile
Run value (xRV) +0.28 Run value (xRV): +0.28, 60th percentile
Strikeout % 21.8% Strikeout %: 21.8%, 44th percentile
Walk % 6.7% Walk %: 6.7%, 81st percentile
Whiff % 23.1% Whiff %: 23.1%, 32nd percentile
Chase % 33.2% Chase %: 33.2%, 77th percentile
Fastball velo 91.8 Fastball velo: 91.8, 12th percentile
Extension 6.4 ft Extension: 6.4 ft, 49th percentile
169.0 IP2.72 ERA3.47 FIP 47° arm

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

−20−20−10−100010102020← Glove sideArm side →Rise (IVB, in) →SISTFC4SCUCH
RHP · arm angle 47° · how to read
PitchUseVeloIVBHBStuffLocWhiffxRV/100
Sinker22% use22%92.07.2+11.8879915%+0.89
Sweeper20% use20%84.8−4.5−13.7999738%+1.77
Cutter19% use19%88.33.7−4.11039615%−0.52
Four-seam17% use17%91.511.3−0.79710813%−0.18
Curveball16% use16%79.6−14.5−12.810110331%−0.35
Changeup6% use6%86.23.7+14.08810022%−1.55

No mix change or new pitch clears its bar. The arsenal is efficient for its shapes.

Most similar pitchers

Pitches like Gray: same hand, shape, slot and mix

SimilarityPlayerStuff’26 WAR’27 proj2027
59Kyle Bradish BAL · ’961001.51.7Signed $10.0M
48Mitch Keller PIT · ’96931.01.3Signed $18.4M
47Hayden Wesneski HOU · ’97901.21.1Arb
46Luinder Avila KC · ’011000.40.5—
45Trevor McDonald SF · ’01930.71.1—

Same-handed pitchers nearest on fastball velocity and shape, arm angle, extension, pitch mix, secondary shapes, Stuff, whiff rate and workload. 2026 regulars only.

Pitch locations · 2026

Where each pitch finishes, by batter side

Curveball 22%
36% zone
Four-seam 22%
52% zone
Sweeper 17%
25% zone
Cutter 15%
55% zone
Sinker 15%
47% zone
Changeup 9%
34% zone

Where each pitch finishes, catcher’s view. The bar marks the batter’s side; the box is an average strike zone. Pitches with 40+ thrown to this side.

Contract & projection

Club control (RosterResource) · Keystone projected WAR

2027 1.7 WAR Mutual option $30.0M
2028 1.2 WAR Free agent
2029 0.8 WAR Free agent
2030 0.4 WAR Free agent

His 2027 is a $30.0M mutual option, decided ≈ Nov 1–5 (either side can decline it). The Free-Agent Board expects it declined, so it prices him as a free agent. Contract Studio →

ABS challenges · 2026

Baseball Savant

As pitcher 50% 1/2 won · 0.0 runs
Keystone is an independent portfolio project. It is not affiliated with Major League Baseball or any club. Data: MLB Stats API, Baseball Savant, FanGraphs. Used under their terms for individual, non-commercial use.