BOS · P

Brayan Bello

Age 27 B/T R/R 6′1″, 195 lb Dominican Republic MLB debut 2022

40-man

Boston’s roster as it stands #5 starter · 128 IP · 1.2 WAR in the role
Trade read Available at a price: BOS 76% playoff odds; control through 2030.

Keystone Stuff 85 5th pct

2026 fWAR 1.0

Projected 2027 WAR 1.4 at 145 IP · 1.2 in his 2027 role

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 1,906 pitches

Keystone Stuff 85

Keystone Location 99

Keystone Pitching 91

Run value (xRV) −0.35

Strikeout % 18.3%

Walk % 7.2%

Whiff % 24.8%

Chase % 32.6%

Fastball velo 95.4

Extension 6.2 ft

116.1 IP4.33 ERA3.97 FIP 39° arm1 SV

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

RHP · arm angle 39° · how to read

Pitch	Use	Velo	IVB	HB	Stuff	Loc	Whiff	xRV/100
Sinker39% use	39%	95.3	6.2	+16.3	97	95	15%	−0.26
Changeup20% use	20%	89.1	5.6	+16.2	85	112	25%	+0.17
Cutter15% use	15%	87.5	2.3	+0.1	86	87	46%	−1.14
Sweeper14% use	14%	86.1	−3.4	−8.4	89	101	31%	+2.10
Four-seam10% use	10%	95.8	12.0	+6.1	74	98	19%	−3.29
Curveball3% use	3%	83.4	−8.3	−1.8	91	104	26%	−2.51

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

Most similar pitchers

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

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
58	Walbert Ureña LAA · ’04	92	2.6	2.3	Pre-arb
57	J.T. Ginn ATH · ’99	87	1.7	1.6	Pre-arb
56	Jack Kochanowicz LAA · ’00	85	0.2	0.2	Pre-arb
53	Brandon Sproat MIL · ’00	94	0.1	0.7	—
52	Sandy Alcantara MIA · ’95	95	3.2	2.1	Free agent

Sandy Alcantara (similarity 52, 2.1 WAR projected for 2027) is a free agent this winter: a similar arsenal available without trading talent, at a free agent’s price. Opportunity Finder →

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

Sinker 32%

49% zone

Changeup 30%

35% zone

Four-seam 14%

44% zone

Cutter 11%

48% zone

Sweeper 6%

32% zone

Curveball 6%

37% 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 1.4 WAR Guaranteed $8.7M

2028 1.3 WAR Guaranteed $16.2M

2029 1.2 WAR Guaranteed $19.2M

2030 1.0 WAR Club option $21.0M

Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevel	Level	Team	Age	G	PA / IP	PA / IP ·Line
2026AAA	AAA	Worcester Red Sox	27	4	18.2 IP	18.2 IP · 4.34 ERA · 26.8% K · 4.9% BB
2025AA	AA	Portland Sea Dogs	26	1	4.1 IP	4.1 IP · 8.31 ERA · 35.0% K · 5.0% BB
2025AAA	AAA	Worcester Red Sox	26	3	9.2 IP	9.2 IP · 6.52 ERA · 31.8% K · 6.8% BB

ABS challenges · 2026

Baseball Savant

As pitcher 0% 0/1 won · 0.0 runs