J.C. Mejía
P | Bats/Throws: R/R | 6' 6" 250LBS | Age: 28
W L ERA G GS SV IP SO WHIP
2021 1 7 8.25 17 11 0 52.1 47 1.61
2022 0 0 23.14 2 0 0 2.1 1 4.29
2023 1 0 5.56 9 0 0 11.1 13 1.59
3 Seasons 2 7 8.32 28 11 0 66 61 1.70
G W-L ERA IP SO WHIP
2021 17 1-7 8.25 52.1 47 1.61
2022 2 0-0 23.14 2.1 1 4.29
2023 9 1-0 5.56 11.1 13 1.59
3 Seasons 28 2-7 8.32 66 61 1.70
MLB Percentile Rankings
Movement Profile (Induced Break)
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Statcast Statistics

Season Age Pitches Batted
Balls
Barrels Barrel % Barrel/PA Exit
Velocity
Max EV Launch
Angle
LA Sweet-
Spot %
XBA XSLG WOBA XWOBA XWOBACON HardHit% K% BB% ERA xERA
2021 24 982 164 14 8.5 5.9 91.0 116.4 8.0 31.1 .284 .484 .385 .369 .422 45.7 19.7 10.1 8.26 6.03
2022 25 59 10 0 0.0 0.0 90.2 111.0 -0.5 50.0 .421 .528 .515 .500 .455 40.0 6.3 31.3 23.14 13.27
2023 26 214 33 2 6.1 4.0 91.8 111.7 -1.2 42.4 .335 .514 .373 .391 .506 45.5 26.0 6.0 5.56 6.90
Player 1255 207 16 7.7 5.3 91.1 116.4 6.1 33.8 .299 .491 .390 .380 .437 45.4 20.1 10.5
MLB 7.0 4.8 88.5 122.4 12.3 33.2 .245 .405 .316 .315 .368 36.5 22.2 8.4
! Note: All figures in this table cover the period 2015-present.

Statcast Pitch Arsenal

Mejía relies on 3 pitches.
Sinker
(54.2%) ,
Slider
(43.0%) ,
Four Seamer
(2.8%) ,


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Pitch Tracking



Batted Ball Profile

Season GB % FB % LD % PU % Pull % Straight % Oppo % Weak % Topped % Under % Flare/Burner % Solid % Barrel % Barrel/PA
2021 48.2 24.4 22.0 5.5 43.9 39.0 17.1 3.0 34.8 18.3 30.5 4.3 8.5 5.9
2022 40.0 10.0 50.0 0.0 70.0 30.0 0.0 10.0 20.0 10.0 40.0 20.0 0.0 0.0
2023 45.5 15.2 39.4 0.0 63.6 24.2 12.1 3.0 39.4 9.1 36.4 6.1 6.1 4.0
Player 47.3 22.2 26.1 4.3 48.3 36.2 15.5 3.4 34.8 16.4 31.9 5.3 7.7 5.3
MLB 44.4 23.8 24.7 7.1 37.2 37.5 25.2 3.9 32.6 24.8 24.4 5.9 7.0 4.8
! Note: All figures in this table cover the period 2015-present.

Pitch Movement


How this works: This section shows two different ways to evaluate pitch movement. On the left, “Total Movement” shows the real-world movement of a pitch, including the forces of gravity, which affects every pitch thrown. Since gravity requires time, and slower pitches aren't 'better' just because they have more time to move, a pitch's movement is compared to other pitches of the same pitch type, within +/- 2 MPH and +/- 0.5 feet of extension/release. On the right, Induced Movement (or IVB) is reported without gravity, and attempts to isolate movement created by the pitcher's ability to spin and manipulate the ball.
Total Movement (in inches, w/ gravity)Induced Movement (in inches, w/o gravity)
YearPitchTeamHand#MPHVertical
Drop
vs.
Comparable
Horizontal
Break
vs.
Comparable
Vertical
Break
vs. AvgHorizontal
Break
vs. Avg
2023 Slider MIL R 92 85.3 35.3 -0.9 7.5GLV 2.4 2.2 -0.7 7.5GLV 2.2
2023 4-Seam Fastball MIL R 6 95.2 20.6 -5.9 12.9ARM 4.8 9.4 -6.4 12.9ARM 5.5
2023 Sinker MIL R 116 95.8 27.5 5.8 16.8ARM 1.3 2.3 5.3 16.8ARM 1.8
2022 Curveball MIL R 2 81.6 53.1 1.3 13.2GLV 5.8 -12.1 2.2 13.2GLV 4.1
2022 4-Seam Fastball MIL R 6 95.7 16.5 -2.2 10.4ARM 2.3 13.3 -2.9 10.4ARM 3.1
2022 Sinker MIL R 32 95.6 25.4 4.3 16.9ARM 1.3 4.5 3.8 16.9ARM 2.1
2022 Slider MIL R 19 84.0 34.0 -3.6 9.5GLV 3.7 4.7 -2.9 9.5GLV 3.8
! Note: Years are in reverse order.

Run Values by Pitch Type

Year Pitch Type Team RV/100 Run Value Pitches % PA BA SLG wOBA Whiff% K% PutAway % xBA xSLG xwOBA Hard Hit %
2023 Sinker -3.6 -4 116 54.2 31 .414 .621 .465 21.5 16.1 16.1 .428 .694 .492 58.3
2023 Slider 1.5 1 92 43.0 17 .133 .200 .209 38.7 41.2 17.5 .157 .185 .214 0.0
2023 4-Seam Fastball -0.4 0 6 2.8 2 .500 .500 .450 50.0 50.0 16.7 .329 .376 .306 100.0
2022 Sinker -10.3 -3 32 54.2 10 .556 .667 .555 33.3 0.0 0.0 .514 .645 .525 44.4
2022 Slider 1.1 0 19 32.2 4 .000 .000 .350 60.0 25.0 14.3 .002 .002 .351 0.0
2022 4-Seam Fastball -8.4 -1 6 10.2 2 -- -- .700 0.0 0.0 0.0 -- -- .700 --
2022 Curveball -2.7 0 2 3.4 -- -- -- -- -- 0.0 -- -- -- --
! Note: Years are in reverse order.
! Note: To better align with other values, positive numbers (red) are good, and negative numbers (blue) are poor.

Spin Direction

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2023 Sinker 114 95.7 85 17.6 2:00 3:00 -60
2023 Slider 92 85.3 34 8.4 9:00 9:00 0
2022 Sinker 31 95.6 77 18.0 1:30 2:45 -75
2022 Slider 19 84.0 48 10.7 8:45 9:30 -45
! Note: Years are in reverse order.
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! Note: This table is showing data from the PITCHER perspective.
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Pitcher Arm Angle

! Note: Data is available from 2020 through the present.
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Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2021 238 982 -6 8 -8 -8 -14
2023 50 214 -4 4 -1 -2 -3
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Plate Discipline

Season Pitches Zone % Zone Swing % Zone Contact % Chase % Chase Contact % Edge % 1st Pitch Strike % Swing % Whiff % Meatball % Meatball Swing %
2021 982 47.5 68.9 86.6 24.6 60.6 41.5 54.2 45.6 20.8 7.2 73.2
2022 59 40.7 62.5 73.3 20.0 42.9 37.3 56.3 37.3 36.4 10.2 83.3
2023 214 45.8 60.2 83.1 33.6 53.8 39.3 58.0 45.8 27.6 6.5 71.4
Player 1,255 46.9 67.2 85.6 25.9 58.4 41.0 54.9 45.3 22.5 7.3 73.6
MLB 48.7 67.0 82.0 28.5 57.8 42.6 61.0 47.2 25.0 7.3 76.3
! Note: All figures in this table cover the period 2015-present.

Percentile Rankings

Year xwOBA /
xERA
xBA xSLG xISO xOBP Brl Brl% EV Hard
Hit%
K% BB% Whiff% Chase
Rate
FB
Velo
FB
Spin
CB
Spin
Extension
2021 4 8 8 15 4 61 38 6 6 24 25 13 14 34 28 59 28
2023 79 16 52
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Expected Home Runs

Adjusted

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %
2021 23.6 13 12.0 1 1 5 9 69.2
2023 24.8 2 2.0 0 0 1 1 50.0
Player 23.8 15 14.0 1 1 6 10 66.7
Note: xHR tells how many of this pitcher's home runs allowed would have been out of other stadiums. The "Adjusted" view here accounts for different wall heights, distances and environmental effects using Statcast Park Factor data.
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Expected Home Runs by Park

Adjusted

Year HR
2021 13 14 11 11 12 11 14 12 10 10 11 13 13 11 11 14 12 10 14 13 13 13 14 13 10 10 12 13 13 11 11
2023 2 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Player 15 15 13 13 14 13 16 14 12 12 13 15 15 13 13 16 14 12 16 15 15 15 16 15 12 12 14 15 15 13 13
Note: xHR tells how many of this pitcher's home runs allowed would have been out of other stadiums. The "Adjusted" view here accounts for different wall heights, distances and environmental effects using Statcast Park Factor data.
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Year to Year Changes

Metric 2021 2022 +/-   2023 +/-  
Fastball Velocity 92.7 95.7 3.0 95.7 0.0
Offspeed Velocity 87.6 0.0 0.0 0.0 0.0
Breaking Velocity 82.2 83.8 1.6 85.3 1.5
Exit Velocity 91.0 90.2 -0.8 91.8 1.6
Launch Angle 8.0 -0.5 -8.5 -1.2 -0.7
Barrel % 8.5 0.0 -8.5 6.1 6.1
Hard Hit % 45.7 40.0 -5.7 45.5 5.5
LA Sweet-Spot % 31.1 50.0 18.9 42.4 -7.6
xBA .284 .421 0.137 .335 -0.086
BA .286 .455 0.169 .326 -0.129
xwOBA .369 .500 0.131 .391 -0.109
wOBA .385 .515 0.130 .373 -0.142
xSLG .484 .528 0.044 .514 -0.014
SLG .538 .545 0.007 .478 -0.067
K% 19.7 6.3 -13.4 26.0 19.7
BB% 10.1 31.3 21.2 6.0 -25.3
Swing % 45.6 37.3 -8.3 45.8 8.5
Whiff% 20.8 36.4 15.6 27.6 -8.8
In Zone % 47.5 40.7 -6.8 45.8 5.1
Out of Zone % 52.5 59.3 6.8 54.2 -5.1
Out of Zone Swing % 24.6 20.0 -4.6 33.6 13.6
First Pitch Swing % 25.2 31.3 6.1 30.0 -1.3
First Pitch Strike % 54.2 56.3 2.1 58.0 1.7
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Statcast Fielder Positioning

vs RHHvs LHH
YearAlignment TypePAwOBAPATotal%PATotal%
2021 Shifts 238 .385 101 3 3.0 137 67 48.9
2022 Shifts 16 .515 10 1 10.0 6 3 50.0
2023 Shades 50 .373 27 0 0.0 23 11 47.8
! Note: Shifts are through the 2022 season, Shaded starting from the 2023 season, Shift: three or more infielders are on the same side of second base, Shade: positioned outside of their typical responsible slices of the field.
Learn more about how positioning is defined here

Pitch Tempo

Bases EmptyRunners On Base
SeasonTeamPitchesTempoFast %Slow %PitchesTempoFast %Slow %
2021 254 16.8 30.7% 3.5% 200 23.0 0.0% 10.5%
2022 10 16.0 40.0% 0.0% 20 20.2 0.0% 0.0%
2023 48 15.2 45.8% 2.1% 50 16.2 24.0% 2.0%

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Pitch Distribution