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Ronald Bolaños
P | B/T: R/R | 6' 2" 230LBS | Age: 25

Poor Avg Great

Stats

W L ERA G GS SV IP SO WHIP
2021 0 0 1.42 3 0 0 6.1 10 0.95
3 Seasons 0 4 5.76 10 5 0 29.2 31 1.55
G W-L ERA IP SO WHIP
2021 3 0-0 1.42 6.1 10 0.95
3 Seasons 10 0-4 5.76 29.2 31 1.55

Statcast Statistics

Season Age Pitches Batted Balls Barrels Barrel % Exit Velocity Max EV Launch Angle Sweet Spot % XBA XSLG WOBA XWOBA XWOBACON HardHit% K% BB% ERA xERA
2019 23 346 56 3 5.4 90 112.5 10.9 37.5 .286 .439 .338 .362 .408 48.2 21.6 13.6 5.95 6.13
2020 24 73 15 2 13.3 92.4 106.6 5 33.3 .367 .703 .575 .500 .511 40 9.5 14.3 12.27 13.61
2021 25 106 13 0 0 81.6 111.1 18.1 15.4 .141 .163 .196 .180 .239 15.4 40 8 1.42 1.40
525 84 5 6 89.1 112.5 11 33.3 .269 .423 .349 .350 .400 41.7 23.1 12.7
6.6 88.3 122.2 12 32.9 .243 .403 .317 .313 .363 35.4 22 8.4

Statcast Pitch Arsenal

Bolanos relies on 5 pitches.
Sinker
(34.9%) ,
Slider
(28.3%) ,
4-Seam Fastball
(18.9%) ,
Curveball
(16%) ,
Changeup
(1.9%) ,


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Pitch Tracking

Year Pitch Type # # RHB # LHB % MPH PA AB H 1B 2B 3B HR SO BBE BA XBA SLG XSLG WOBA XWOBA EV LA Spin Ext. Whiff% PutAway%
2021 Sinker 37 20 17 34.9 94.9 12 11 2 2 0 0 0 5 6 .182 .110 .182 .130 .204 .156 74.2 6 2200 6.6 35.0 45.5
2021 Slider 30 23 7 28.3 86.3 6 6 1 1 0 0 0 3 3 .167 .257 .167 .297 .147 .246 90.6 6 2574 6.6 60.0 37.5
2021 4-Seam Fastball 20 12 8 18.9 95.0 5 4 1 1 0 0 0 1 3 .250 .119 .250 .124 .314 .224 89.6 41 2200 6.6 18.2 16.7
2021 Curveball 17 8 9 16.0 79.8 2 2 0 0 0 0 0 1 1 .000 .013 .000 .015 .000 .012 75.5 59 2647 6.6 20.0 33.3
2021 Changeup 2 0 2 1.9 89.2 1525 6.8
2020 4-Seam Fastball 29 17 12 39.7 95.5 11 9 4 3 0 0 1 1 8 .444 .365 .778 .741 .550 .511 96.7 1 2215 6.3 7.1 20.0
2020 Slider 15 10 5 20.5 86.3 1 1 1 0 0 0 1 0 1 1.000 .727 4.000 2.625 1.979 1.342 100.4 28 2599 6.2 16.7 0.0
2020 Sinker 14 2 12 19.2 94.4 5 3 1 1 0 0 0 0 3 .333 .256 .333 .294 .456 .427 79.6 -6 2207 6.3 20.0 0.0
2020 Curveball 13 6 7 17.8 77.2 4 4 2 2 0 0 0 1 3 .500 .363 .500 .444 .441 .350 92.6 17 2599 6.2 28.6 20.0
2020 Changeup 2 0 2 2.7 87.8 1416 6.4
! Note: Years are in reverse order.
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Batted Ball Profile

Season GB % FB % LD % PU % Pull % Straight % Oppo % Weak % Topped % Under % Flare/Burner % Solid % Barrel %
2019 41.1 25 30.4 3.6 50 26.8 23.2 1.8 32.1 23.2 28.6 7.1 5.4
2020 53.3 13.3 33.3 0 20 66.7 13.3 0 33.3 6.7 40 0 13.3
2021 38.5 30.8 15.4 15.4 30.8 38.5 30.8 0 30.8 46.2 23.1 0 0
42.9 23.8 28.6 4.8 41.7 35.7 22.6 1.2 32.1 23.8 29.8 4.8 6
45.1 22.5 25.4 7.1 36.6 37.8 25.5 3.7 33.2 24.4 24.4 5.7 6.6

Pitch Movement


How this works: Every pitch is affected by the forces of gravity, which means that every pitch drops on its way from the mound to the plate. These numbers are reported with gravity, which makes them larger and different than other pitch movement numbers you may have seen. Since gravity requires time, and slower pitches aren’t ‘better’ just because they have more time to move, the movement of a pitch is compared to ‘average’ movement by comparing it to other MLB pitch types within +/- 2 MPH and from within +/- 0.5 feet of extension and release.
Vertical Movement (inches) Horizontal Movement (inches)
Year Pitch Team Hand # MPH Inches of Drop vs Avg % vs Avg Inches of Break vs Avg % Break vs Avg
2021 Curveball KC R 17 79.8 43.6 -9.7 -18 11.9 3.5 42
2021 4-Seamer KC R 20 95 15.7 -2 -14 8.9 1.9 28
2021 Changeup KC R 2 89.2 22.8 -4 -15 12.2 -1.3 -9
2021 Sinker KC R 37 94.9 19.6 0.1 0 13.3 -1.2 -8
2021 Slider KC R 30 86.3 33.2 -1.2 -3 5 0.4 9
2020 4-Seamer KC R 29 95.5 16.2 -2.3 -17 8.6 1.4 19
2020 Changeup KC R 2 87.8 28.8 0 0 6 -7.3 -55
2020 Slider KC R 15 86.3 31.9 -2.8 -8 4.1 -0.1 -2
2020 Sinker KC R 14 94.4 21.1 1 5 13.4 -1 -7
2020 Curveball KC R 13 77.2 48.5 -8.4 -15 12.6 2.8 29
2019 Curveball SD R 71 76.4 51.9 -6.8 -12 14.7 4.4 42
2019 4-Seamer SD R 189 94.3 15.8 -0.8 -5 7.9 0.6 9
2019 Sinker SD R 28 94.1 18.7 -2.1 -10 12.6 -1.9 -13
2019 Changeup SD R 18 86.2 27.8 -1.3 -5 9.4 -4.2 -31
2019 Slider SD R 38 83 37.4 -1.5 -4 6.5 0.6 10
! Note: Years are in reverse order.
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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 %
2021 Curveball -2.7 0 17 16 2 0 0 0 20 50 33.3 .013 .015 .012 0
2021 4-Seamer 0.6 0 20 18.9 5 .25 .25 .32 18.2 20 16.7 .119 .124 .226 33.3
2021 Slider -3 -1 30 28.3 6 .167 .167 .15 60 50 37.5 .257 .297 .246 33.3
2021 Sinker -4.4 -2 37 34.9 12 .182 .182 .208 35 41.7 45.5 .11 .13 .157 0
2021 Changeup 3.7 0 2 1.9
2020 Slider 17.5 3 15 20.5 1 1 4 2 16.7 0 0 .727 2.625 1.342 100
2020 Curveball -0.1 0 13 17.8 4 .5 .5 .45 28.6 25 20 .363 .444 .35 0
2020 Sinker 3.2 0 14 19.2 5 .333 .333 .64 20 0 0 .256 .294 .427 0
2020 4-Seamer 10.5 3 29 39.7 11 .444 .778 .555 7.1 9.1 20 .365 .741 .508 62.5
2020 Changeup 4 0 2 2.7
2019 Sinker -5.2 -1 28 8.1 7 .167 .333 .279 25 28.6 33.3 .325 .384 .366 75
2019 Slider 2.5 1 38 11 8 .4 .8 .488 23.5 12.5 16.7 .344 .406 .401 20
2019 Curveball -0.9 -1 71 20.5 20 .158 .368 .243 55.2 60 41.4 .162 .226 .192 28.6
2019 4-Seamer -0.1 0 189 54.6 52 .256 .488 .381 12.3 7.7 11.1 .315 .532 .414 51.3
2019 Changeup 3 1 18 5.2 50 0
! Note: Years are in reverse order.
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Spin Direction

Year Pitch Type Pitches MPH Active Spin % Total Movement (In.) Spin-Based Observed Deviation
2020 Curveball 12 77.9 58 14 8:00 8:30 -30
2020 4-Seam Fastball 26 95.6 89 15.7 1:00 1:15 -15
2020 Sinker 11 94.5 89 16.1 1:00 2:00 -60
2020 Slider 14 86.3 33 5.9 9:30 10:15 -45
2021 Curveball 17 79.8 63 13.1 8:00 8:45 -45
2021 4-Seam Fastball 20 95 83 16.6 12:45 1:00 -15
2021 Sinker 35 94.9 84 16.8 12:45 1:45 -60
2021 Slider 30 86.3 42 6.7 9:30 10:00 -30
! Note: This table is showing data from the PITCHER perspective.
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Swing/Take

Runs
Year Team PA Pitches Heart Shadow Chase Waste All
2019 88 346 -6 -1 3 3 -1
2021 25 106 -1 -3 1 0 -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 %
2019 346 46.5 65.2 82.9 20 54.1 43.6 48.9 41 23.9 7.5 76.9
2020 73 53.4 71.8 82.1 11.8 100 41.1 42.9 43.8 15.6 5.5 100
2021 106 43.4 65.2 76.7 35 42.9 44.3 44 48.1 37.3 7.5 87.5
525 46.9 66.3 81.6 22.2 53.2 43.4 47 42.9 25.8 7.2 81.6
48.5 66.8 82 28.3 58.5 42.6 60.6 47 24.6 7.2 76

Percentile Rankings

Year xwOBA xBA xSLG xISO xOBP Brl Brl% EV HardHit% K% BB% Whiff% xERA FB Velo FB Spin CB Spin
2019 71 45 72
2020
2021
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Expected Home Runs

Year Team Avg HR Trot Actual HR xHR HR-xHR Doubters Mostly Gone No Doubters No Doubter %
2019 22.8 3 1.8 1 1 2 0 0
2020 23.6 2 1.8 0 0 1 1 50

Expected Home Runs by Park

Year HR
2019 3 1 3 2 2 1 2 2 2 2 2 2 1 2 2 2 2 2 2 3 0 1 1 2 2 2 2 2 2 1 2
2020 2 2 1 2 2 1 2 2 1 1 2 2 2 0 1 2 1 2 2 2 1 2 2 2 2 2 2 2 2 2 2
! Note: This tells how many of this player's home runs would have been out of other stadiums. This accounts for different wall heights and distances, but does not attempt to adjust for environmental effects. For these purposes, the 2020 Blue Jays home field was still Rogers Centre, not Sahlen Field.
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Year to Year Changes

Metric 2015 2016 +/-   2017 +/-   2018 +/-   2019 +/-   2020 +/-   2021 +/-  
Fastball Velocity 94.2 95.2 1 94.9 -0.3
Offspeed Velocity 86.2 87.8 1.6 89.2 1.4
Breaking Velocity 78.5 82.1 3.6 83.9 1.8
Exit Velocity 90 92.4 2.4 81.6 -10.8
Launch Angle 10.9 5 -5.9 18.1 13.1
Barrel % 5.4 13.3 7.9 0 -13.3
Hard Hit % 48.2 40 -8.2 15.4 -24.6
Sweet Spot % 37.5 33.3 -4.2 15.4 -17.9
xBA .286 .367 0.081 .141 -0.226
BA .23 .471 0.241 .174 -0.297
xwOBA .362 .5 0.138 .18 -0.32
wOBA .338 .575 0.237 .196 -0.379
xSLG .439 .703 0.264 .163 -0.54
SLG .459 .824 0.365 .174 -0.65
K% 21.6 9.5 -12.1 40 30.5
BB% 13.6 14.3 0.7 8 -6.3
Swing % 41 43.8 2.8 48.1 4.3
Whiff% 23.9 15.6 -8.3 37.3 21.7
In Zone % 46.5 53.4 6.9 43.4 -10
Out of Zone % 53.5 46.6 -6.9 56.6 10
Out of Zone Swing % 20 11.8 -8.2 35 23.2
First Pitch Swing % 18.2 33.3 15.1 20 -13.3
First Pitch Strike % 48.9 42.9 -6 44 1.1
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Statcast Shift Statistics

vs RHHvs LHH
YearPAwOBAPAShifts%PAShifts%
2019 88 .338 40 5 12.5 48 23 47.9
2020 21 .575 11 4 36.4 10 4 40.0
2021 25 .196 15 2 13.3 10 7 70.0

Pitch Distribution