COL · P

Juan Mejia

Age 26 B/T R/R 6′3″, 210 lb Dominican Republic MLB debut 2025

40-man

Colorado’s roster as it stands late-inning relief · 61 IP · 0.5 WAR in the role

Keystone Stuff 91 16th pct

2026 fWAR 0.5

Projected 2027 WAR 0.6 at 71 IP · 0.5 in his 2027 role

Pitching · 2026 percentiles

vs. MLB pitchers with 500+ pitches · 1,303 pitches

Keystone Stuff 91

Keystone Location 87

Keystone Pitching 88

Run value (xRV) −0.08

Strikeout % 20.4%

Walk % 12.4%

Whiff % 23.6%

Chase % 30.2%

Fastball velo 96.8

Extension 6.0 ft

70.0 IP5.27 ERA4.17 FIP 35° arm4 SV

Arsenal & Pitch Lab

Movement normalized to arm side · Keystone Stuff by pitch

RHP · arm angle 35° · how to read

Pitch	Use	Velo	IVB	HB	Stuff	Loc	Whiff	xRV/100
Four-seam54% use	54%	96.9	10.5	+4.8	86	88	18%	−0.99
Sweeper38% use	38%	83.9	−1.8	−14.0	107	94	33%	+0.77
Sinker5% use	5%	96.0	6.9	+10.9	83	108	19%	+3.21
Changeup2% use	2%	93.2	6.7	+13.0	73	91	20%	+0.14

Weak pitch to watch

Four-seam grades 86 with below-average expected results; his slider grades 112. Neither side has 60+ of each pitch. No mix change until it clears.

Pitch idea (fragile)

Built from his own fastball (96.9 mph) plus the typical shape 37 pitchers with his slot (35°) throw: a slider around 87.8 mph, −0.6″ rise, −10.5″ arm-side. On the same model it grades +6 against his sweeper, the pitch with the same job (+2 to +10 across the production and three cross-fit models), about 113 on his sweeper’s scale; the comps’ own sliders grade 106 at the median, so that sits above 92% of them. The fits disagree, so it isn’t queued.

Most similar pitchers

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

Similarity	Player	Stuff	’26 WAR	’27 proj	2027
57	Eduard Bazardo SEA · ’95	94	−0.5	0.0	Arb
51	Zach Agnos COL · ’00	87	0.1	0.1	—
44	Orion Kerkering PHI · ’01	107	0.3	0.7	Arb
42	Kai-Wei Teng HOU · ’98	93	0.2	0.3	—
40	Kevin Ginkel AZ · ’94	95	0.8	0.5	Free agent

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

Four-seam 52%

44% zone

Sweeper 38%

41% zone

Sinker 8%

55% 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 0.6 WAR —

2028 0.7 WAR —

2029 0.7 WAR —

2030 0.6 WAR —

Contract Studio →

Minor leagues

MLB Stats API · public box-score data

SeasonLevel	Level	Team	Age	G	PA / IP	PA / IP ·Line
2025AAA	AAA	Albuquerque Isotopes	24	10	13.1 IP	13.1 IP · 4.73 ERA · 39.3% K · 10.7% BB