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Blas Castano

#63 - Relief Pitcher

Colorado Rockies

Bats / Throws Right / Right
Date of Birth 9/8/1998 (27)
Height, Weight 5'10", 162 lb
Hometown Espaillat, DOM

2026 Season Stats

MLB Rank MLB Average
Sv IP ERA WHIP K% BB%
0 15.2 3.45 1.34 21.5% 9.2%
153rd 1
Sv
269th 22.0
IP
190th 4.46
ERA
123rd 1.40
WHIP
160th 22.2%
K%
96th 10.5%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
94.1 9.6% 28.7% 50.2% 6.1% 4.74 4.21
152nd 94.2
FB MPH
196th 12.0%
SwStr%
107th 28.5%
CSW%
136th 50.5%
Str-ICR
308th 4.5%
MTK%
317th 4.93
PLV
285th 3.65
PLA

Articles

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5/28/2026Fantasy Baseball Relief Pitcher Roundup: 5/27Rick Graham

5/25/2026Fantasy Baseball Relief Pitcher Roundup: 5/24Rick Graham

5/22/2026Fantasy Baseball Relief Pitcher Roundup: 5/21Rick Graham

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Blas Castano Overview

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team G GS IP W-L Sv Hld ERA WHIP xERA FIP xFIP PLA K% BB% H/9 HR/9 BABIP HR/FB% LOB% ICR GB% SwStr% CSW% IPR PLV
2025 SEA 1 0 3.0 0-0 0 0 9.00 2.00 9.50 9.80 9.54 4.72 6.3% 12.5% 12.0 3.00 .273 20.0% 71.4% 50.0% 25.0% 2.0% 14.0% 0.04 4.47
2026 COL 7 0 15.2 0-0 0 0 3.45 1.34 4.56 4.56 4.66 4.21 21.5% 9.2% 8.6 1.15 .317 16.7% 84.2% 44.2% 44.2% 9.6% 28.7% 0.54 4.74
RP MLB Percentile 10 0 22 0-64 0 0 46 63 34 35 35 19 54 72 45 28 40 40 69 18 56 43 67 77 8
RP MLB AVG 17 1 22.0 1-1 1 3 4.46 1.40 4.32 4.33 4.36 3.65 22.2% 10.5% 8.5 1.08 .290 17.4% 72.0% 37.2% 43.7% 12.0% 28.5% 0.49 4.93
Career 8 0 18.2 0-0 0 0 4.34 1.45 5.36 5.36 5.41 4.29 18.5% 9.9% 9.2 1.45 .308 17.6% 81.4% 45.5% 40.0% 8.4% 26.4% 0.46 4.70

Blas Castano Repertoire

2025 2026 All
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Blas Castano Game Log

Blas Castano Standard

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team G GS IP W-L QS Sv Hld P Strikes Balls TBF H 1B 2B 3B HR K BB HB WP
2025 SEA 1 0 3.0 0-0 0 0 0 50 31 19 16 4 1 2 0 1 1 2 1 0
2026 COL 7 0 15.2 0-0 0 0 0 261 169 92 65 15 10 1 2 2 14 6 2 0
RP MLB Percentile 10 0 22 0-64 0 0 0 21 24 81 20 74 79 80 2 38 21 84 14 52
RP MLB AVG 17 1 22.0 1-1 0 1 3 384 243 141 98 21 14 4 0 3 22 10 1 1
Career 8 0 18.2 0-0 0 0 0 311 200 111 81 19 11 3 2 3 15 8 3 0

Blas Castano Advanced

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Year Team K% BB% AVG SLG OPS wOBA BABIP BACON xAVG xwOBA xBABIP xwoBACON EV FB EV LA xERA
2025 SEA 6.3% 12.5% .308 .692 1.130 .470 .273 .333 .306 .482 .239 .467 91.4 91.2 19.3 9.50
2026 COL 21.5% 9.2% .263 .456 .810 .358 .317 .349 .231 .338 .263 .378 92.5 89.9 8.6 4.56
RP MLB Percentile 54 72 39 18 23 24 40 34 61 34 77 26 1 44 73 34
RP MLB AVG 22.2% 10.5% .241 .388 .717 .319 .290 .319 .236 .321 .282 .362 87.9 89.5 13.4 4.32
Career 18.5% 9.9% .271 .500 .870 .382 .308 .345 .245 .368 .258 .399 92.2 90.3 10.9 5.36

Blas Castano Pitch › Mix

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Year Team FF% (MPH) SI% (MPH) FC% (MPH) SL% (MPH) ST% (MPH) CB% (MPH) CH% (MPH) FS% (MPH) KN% (MPH) Fastball% Secondary%
2025 SEA 10.0% (93.3) 6.0% (93.9) 40.0% (89.8) - 12.0% (82.1) - 32.0% (88.6) - - 16.0% 84.0%
2026 COL 7.7% (94.4) 41.0% (94.1) 16.5% (90.2) - 24.5% (83.0) - 10.3% (89.3) - - 48.7% 51.3%
RP MLB Percentile 3 (46) 82 (50) 37 (59) - 61 (57) - 30 (78) - - 48.6% 51.1%
RP MLB AVG 37.2% (94.2) 26.1% (93.9) 21.7% (89.3) 26.1% (85.4) 22.3% (82.4) 17.5% (79.8) 18.2% (86.2) 19.9% (86.5) 31.8% (68.1) 47.5% 52.4%
Career 8.0% (94.2) 35.4% (94.1) 20.3% (90.1) - 22.5% (-) - 13.8% (89.0) - - 43.4% 56.6%

Blas Castano Pitch › Results

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Year Team FF CSW% SI CSW% FC CSW% SL CSW% ST CSW% CB CSW% CH CSW% FS CSW% KN CSW% Fastball CSW% Secondary CSW%
2025 SEA 0.0% (0) 0.0% (0) 25.0% (0) - 16.7% (0) - 6.3% (1) - - 0.0% 16.7%
2026 COL 25.0% (1) 29.0% (6) 30.2% (4) - 34.4% (12) - 14.8% (2) - - 28.3% 29.1%
RP MLB Percentile 37 (91) 53 (31) 65 (50) - 79 (33) - 19 (67) - - 48.9% 70.6%
RP MLB AVG 26.9% (13) 27.6% (6) 26.8% (7) 29.5% (12) 28.2% (10) 26.5% (7) 21.9% (9) 24.5% (12) 23.3% (6) 28.0% 28.6%
Career 20.0% (1) 28.2% (6) 28.6% (4) - 32.9% (12) - 11.6% (3) - - 26.7% 26.1%

Blas Castano Batted Ball › Contact

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Year Team GB% LD% FB% PU% SS% Pull% Cent% Oppo% Foul Str% PC% Fl&B% Solid% Brl% ICR
2025 SEA 25.0% 33.3% 41.7% 0.0% 58.3% 41.7% 50.0% 8.3% 24.0% 50.0% 16.7% 8.3% 25.0% 50.0%
2026 COL 44.2% 27.9% 27.9% 0.0% 41.9% 46.5% 46.5% 7.0% 19.5% 55.9% 23.3% 11.6% 9.3% 44.2%
RP MLB Percentile 56 39 85 0 19 89 99 0 76 20 89 1 14 18
RP MLB AVG 43.7% 21.5% 24.4% 10.4% 34.5% 41.5% 33.5% 25.0% 17.6% 62.5% 24.4% 5.9% 7.3% 37.2%
Career 40.0% 29.1% 30.9% 0.0% 45.5% 45.5% 47.3% 7.3% 20.3% 54.5% 21.8% 10.9% 12.7% 45.5%

Blas Castano Batted Ball › Outcomes

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Year Team AVG wOBA BABIP BACON xAVG xwOBA xBABIP xwoBACON EV FB EV LA HR/FB ICR IPA%
2025 SEA .308 .470 .273 .333 .306 .482 .239 .467 91.4 91.2 19.3 20.0% 50.0% 37.5%
2026 COL .263 .358 .317 .349 .231 .338 .263 .378 92.5 89.9 8.6 16.7% 44.2% 29.2%
RP MLB Percentile 39 24 40 34 61 34 77 26 1 44 73 40 18 23
RP MLB AVG .241 .319 .290 .319 .236 .321 .282 .362 87.9 89.5 13.4 17.4% 37.2% 24.6%
Career .271 .382 .308 .345 .245 .368 .258 .399 92.2 90.3 10.9 17.6% 45.5% 30.9%

Blas Castano Approach › Plate Discipline

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Year Team Zone% Str% Swing% O-Sw% Whiff% Foul Str% Con% Z-Con% O-Con% CS% SwStr% CSW% BIP% PLUS% IPR Str-ICR
2025 SEA 56.0% 62.0% 50.0% 13.6% 4.0% 24.0% 96.0% 95.5% 100.0% 12.0% 2.0% 14.0% 24.0% 54.0% 0.04 38.0%
2026 COL 46.7% 64.8% 45.6% 30.2% 21.0% 19.5% 79.0% 88.3% 61.9% 19.2% 9.6% 28.7% 16.5% 59.0% 0.54 50.2%
RP MLB Percentile 78 75 48 45 40 76 40 35 56 80 43 67 34 72 77 60
RP MLB AVG 44.2% 63.1% 46.6% 31.0% 25.7% 17.6% 74.4% 84.0% 58.3% 16.5% 12.0% 28.5% 17.0% 57.7% 0.49 50.5%
Career 48.2% 64.3% 46.3% 28.0% 18.1% 20.3% 81.9% 89.9% 64.4% 18.0% 8.4% 26.4% 17.7% 58.2% 0.46 48.2%

Blas Castano Approach › Locations

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Year Team Zone% aLoc% x-mLoc% gLoc% hiLoc% y-mLoc% loLoc% iLoc% oLoc% mmLoc%
2025 SEA 56.0% 36.0% 32.0% 32.0% 20.0% 40.0% 40.0% 32.0% 36.0% 16.0%
2026 COL 46.7% 31.0% 27.2% 41.8% 30.7% 30.3% 39.1% 36.0% 36.8% 9.6%
RP MLB Percentile 78 29 40 69 29 6 41 79 19 98
RP MLB AVG 44.2% 34.6% 26.9% 38.5% 36.4% 22.7% 41.0% 30.3% 42.8% 6.5%
Career 48.2% 31.8% 28.0% 40.2% 28.9% 31.8% 39.2% 35.4% 36.7% 10.6%

Blas Castano Approach › Counts

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Year Team Early% Behind% 2-Str% Early BIP% F-Str% TF-Str% ECS% 2-Str O-Sw% PAR%
2025 SEA 64.0% 10.0% 26.0% 28.1% 56.3% 37.5% 15.6% - 7.7%
2026 COL 58.6% 12.3% 29.1% 13.7% 68.2% 56.1% 26.1% 26.3% 18.4%
RP MLB Percentile 48 61 54 27 94 85 90 38 49
RP MLB AVG 58.5% 12.6% 29.4% 14.2% 60.1% 49.6% 21.1% 26.4% 19.2%
Career 59.5% 11.9% 28.6% 16.2% 65.9% 52.4% 24.3% 22.5% 16.9%

Blas Castano PLV

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Year Team P PLV QP% AP% BP% Q-BP% MTK% HP HL PLA
2025 SEA 50 4.47 36.0% 28.0% 36.0% 0.0% 4.0% 2.8 +2 4.72
2026 COL 261 4.74 41.0% 21.5% 37.5% 3.4% 6.1% 1.5 -2 4.21
RP MLB Percentile 21 8 4 92 25 25 11 47 68 19
RP MLB AVG 384 4.93 46.0% 16.9% 37.0% 9.0% 4.5% 0.4 0 3.65
Career 311 4.70 40.2% 22.5% 37.3% 2.9% 5.8% 4.3 0 4.29
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