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Ronald Bolaños
P | B/T: R/R | 6' 2" 230LBS | Age: 24

Poor Avg Great

Stats

W L ERA G GS SV IP SO WHIP
2020 0 2 12.27 2 2 0 3.2 2 3.00
2 Seasons 0 4 6.94 7 5 0 23.1 21 1.71
G W-L ERA IP SO WHIP
2020 2 0-2 12.27 3.2 2 3.00
2 Seasons 7 0-4 6.94 23.1 21 1.71

Statcast Statistics

Season Pitches Batted Balls Barrels Barrel % Exit Velocity Max EV Launch Angle Sweet Spot % XBA XSLG WOBA XWOBA XWOBACON HardHit% K% BB% ERA xERA
2019 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 73 15 2 13.3 92.4 106.6 5 33.3 .368 .705 .575 .501 .513 40 9.5 14.3 12.27 13.69
419 71 5 7 90.5 112.5 9.7 36.6 .301 .489 .384 .389 .430 46.5 19.3 13.8
6.5 88.3 122.2 11.9 32.8 .243 .403 .318 .313 .363 35.2 21.9 8.4

Statcast Pitch Arsenal

Bolanos relies on 5 pitches.
4-Seam Fastball
(45.2%) ,
Slider
(28.8%) ,
Sinker
(15.1%) ,
Curveball
(9.6%) ,
Changeup
(1.4%) ,


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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%
2020 4-Seam Fastball 33 17 16 45.2 95.2 11 9 4 3 0 0 1 1 8 .444 .368 .778 .744 .550 .513 96.7 1 2184 6.3 12.5 20.0
2020 Slider 21 15 6 28.8 84.6 2 2 1 0 0 0 1 0 2 .500 .394 2.000 1.416 .990 .725 96.2 32 2609 6.2 22.2 0.0
2020 Sinker 11 2 9 15.1 94.5 5 3 1 1 0 0 0 0 3 .333 .256 .333 .294 .456 .427 79.6 -6 2231 6.3 0.0 0.0
2020 Curveball 7 1 6 9.6 74.4 3 3 2 2 0 0 0 1 2 .667 .464 .667 .523 .588 .431 92.9 9 2569 6.2 25.0 33.3
2020 Changeup 1 0 1 1.4 86.3 1377 6.3
2019 4-Seam Fastball 189 77 112 54.6 94.3 52 43 11 5 4 0 2 4 39 .256 .315 .488 .532 .372 .413 91.0 10 2239 6.4 12.3 11.1
2019 Curveball 71 30 41 20.5 76.4 20 19 3 1 1 0 1 12 7 .158 .162 .368 .226 .236 .191 87.2 8 2650 5.9 55.2 41.4
2019 Slider 38 23 15 11.0 83.0 8 5 2 1 0 1 0 1 5 .400 .344 .800 .406 .472 .399 87.1 31 2574 6.0 23.5 16.7
2019 Sinker 28 9 19 8.1 94.1 7 6 1 0 1 0 0 2 4 .167 .326 .333 .385 .272 .365 87.9 -1 2238 6.4 25.0 33.3
2019 Changeup 18 0 18 5.2 86.2 1376 6.6 50.0
2019 Eephus 2 0 2 0.6 65.7 1 1 0 0 0 0 0 0 1 .000 .853 .000 .999 .000 .799 95.5 11 2416 6.3 0.0 0.0


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
43.7 22.5 31 2.8 43.7 35.2 21.1 1.4 32.4 19.7 31 5.6 7
45.2 22 25.6 7.1 36.6 37.9 25.5 3.6 33.4 24.3 24.5 5.6 6.5

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
2020 Curveball KC R 7 74.4 54.4 -7.2 -12 15.1 4.4 41
2020 Changeup KC R 1 86.3 30.2 1 3 6.5 -6.5 -50
2020 4-Seamer KC R 33 95.2 17.1 -3 -22 8.7 1.6 22
2020 Slider KC R 21 84.6 34.7 -2.1 -6 5.8 0.4 7
2020 Sinker KC R 11 94.5 20.7 0.7 3 14.1 -0.2 -1
2019 Sinker SD R 28 94.1 18.7 -2.1 -10 12.6 -1.9 -13
2019 Curveball SD R 71 76.4 51.9 -6.8 -12 14.7 4.4 42
2019 Slider SD R 38 83 37.4 -1.4 -4 6.5 0.6 10
2019 4-Seamer SD R 189 94.3 15.8 -0.8 -5 7.9 0.6 9
2019 Changeup SD R 18 86.2 27.8 -1.3 -5 9.4 -4.2 -31
! 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 %
2020 Slider 11 2 21 28.8 2 .5 2 1 22.2 0 0 .393 1.416 .725 50
2020 Curveball 4.5 0 7 9.6 3 .667 .667 .6 25 33.3 33.3 .464 .523 .431 0
2020 Sinker 5.3 1 11 15.1 5 .333 .333 .64 0 0 0 .256 .294 .427 0
2020 4-Seamer 8.9 3 33 45.2 11 .444 .778 .555 12.5 9.1 20 .368 .744 .51 62.5
2020 Changeup 4 0 1 1.4
2019 Sinker -5.2 -1 28 8.1 7 .167 .333 .279 25 28.6 33.3 .326 .385 .367 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 4-Seam Fastball 30 95.3 88 15.2 1:00 1:15 -15
2020 Slider 20 84.5 37 7.4 9:15 9:45 -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
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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
419 47.7 66.5 82.7 18.7 58.5 43.2 47.7 41.5 22.4 7.2 80
48.4 66.6 82.1 28.4 58.8 42.6 60.5 46.9 24.4 7.2 75.8

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
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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 1.9 1 1 1 1 33.3
2020 23.6 2 1.7 0 0 2 0 0

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 1 1 2 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 1 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 0.8 undefined
Offspeed Velocity 86.2 86.3 0.1 undefined
Breaking Velocity 78.5 82.1 3.6 undefined
Exit Velocity 90 92.4 2.4 undefined
Launch Angle 10.9 5 -5.9 undefined
Barrel % 5.4 13.3 7.9 undefined
Hard Hit % 48.2 40 -8.2 undefined
Sweet Spot % 37.5 33.3 -4.2 undefined
xBA .286 .368 0.082 undefined
BA .23 .471 0.241 undefined
xwOBA .362 .501 0.139 undefined
wOBA .338 .575 0.237 undefined
xSLG .439 .705 0.266 undefined
SLG .459 .824 0.365 undefined
K% 21.6 9.5 -12.1 undefined
BB% 13.6 14.3 0.7 undefined
Swing % 41 43.8 2.8 undefined
Whiff% 23.9 15.6 -8.3 undefined
In Zone % 46.5 53.4 6.9 undefined
Out of Zone % 53.5 46.6 -6.9 undefined
Out of Zone Swing % 20 11.8 -8.2 undefined
First Pitch Swing % 18.2 33.3 15.1 undefined
First Pitch Strike % 48.9 42.9 -6 undefined
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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

Pitch Distribution