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Blas Castaño

#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 20.2 3.92 1.35 20.0% 7.1%
204th 3
Sv
285th 39.0
IP
171st 4.29
ERA
178th 1.35
WHIP
226th 22.5%
K%
69th 9.8%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
94.1 9.3% 28.9% 49.9% 7.6% 4.82 3.92
174th 94.7
FB MPH
294th 12.2%
SwStr%
152nd 28.5%
CSW%
206th 51.1%
Str-ICR
336th 4.7%
MTK%
275th 4.94
PLV
250th 3.54
PLA

Articles

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Blas Castaño Overview

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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 10 0 20.2 1-0 0 0 3.92 1.35 5.14 5.17 4.27 3.92 20.0% 7.1% 9.6 1.74 .321 28.6% 86.1% 45.0% 49.2% 9.3% 28.9% 0.54 4.82
RP MLB Percentile 6 0 18 24-79 0 0 52 47 19 22 49 29 36 78 23 18 26 12 94 9 75 15 56 66 20
RP MLB AVG 31 2 39.0 2-2 3 5 4.29 1.35 4.27 4.29 4.32 3.54 22.5% 9.8% 8.3 1.15 .288 18.1% 72.5% 36.9% 43.7% 12.2% 28.5% 0.50 4.94
Career 11 0 23.2 1-0 0 0 4.56 1.44 5.70 5.72 4.92 4.02 17.8% 7.9% 9.9 1.90 .313 26.3% 83.3% 45.8% 45.1% 8.4% 27.0% 0.48 4.78

Blas Castaño Repertoire

2025 2026 All
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Blas Castaño Game Log

Blas Castaño Standard

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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 10 0 20.2 1-0 0 0 0 343 225 118 85 22 14 2 2 4 17 6 2 0
RP MLB Percentile 6 0 18 24-79 0 0 0 17 19 84 15 72 73 83 4 42 15 90 34 70
RP MLB AVG 31 2 39.0 2-2 0 3 5 660 421 239 169 36 24 7 1 5 38 16 2 2
Career 11 0 23.2 1-0 0 0 0 393 256 137 101 26 15 4 2 5 18 8 3 0

Blas Castaño 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 20.0% 7.1% .289 .526 .879 .376 .321 .367 .264 .359 .281 .416 92.7 91.3 7.0 5.14
RP MLB Percentile 36 78 15 10 11 11 26 19 23 19 50 14 1 27 85 19
RP MLB AVG 22.5% 9.8% .241 .393 .717 .316 .288 .320 .236 .317 .280 .361 87.7 89.2 13.2 4.27
Career 17.8% 7.9% .292 .551 .917 .392 .313 .361 .270 .379 .274 .425 92.5 91.2 9.1 5.70

Blas Castaño 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 SEA10.0% (93.3)6.0% (93.9)40.0% (89.8)-12.0% (82.1)-32.0% (88.6)-- 16.0% 84.0%
2026 COL8.5% (94.5)41.1% (94.1)14.9% (90.3)-24.8% (82.9)-10.8% (89.2)-- 49.6% 50.4%
RP MLB Percentile 2 (44) 82 (49) 37 (58) - 64 (56) - 34 (79) - - 53.0% 46.7%
RP MLB AVG 37.7% (94.7) 26.2% (93.9) 20.4% (89.4) 25.6% (85.6) 21.3% (82.5) 16.3% (79.8) 17.1% (86.2) 17.8% (86.5) 32.5% (68.2) 48.2% 51.6%
Career8.7% (94.3)36.6% (94.1)18.1% (90.2)-23.2% (82.8)-13.5% (89.0)-- 45.3% 54.7%

Blas Castaño 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 SEA0.0% (0)0.0% (0)25.0% (0)-16.7% (0)-6.3% (1)-- 0.0% 16.7%
2026 COL34.5% (2)29.1% (9)29.4% (5)-30.6% (14)-18.9% (2)-- 30.0% 27.7%
RP MLB Percentile 92 (2) 57 (33) 63 (57) - 63 (38) - 35 (70) - - 71.1% 40.2%
RP MLB AVG 26.8% (24) 27.3% (10) 26.5% (12) 29.3% (20) 27.9% (16) 27.3% (10) 21.8% (15) 23.2% (17) 22.0% (9) 27.9% 28.8%
Career29.4% (2)28.5% (9)28.2% (5)-29.7% (14)-15.1% (3)-- 28.7% 25.6%

Blas Castaño 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 49.2% 27.1% 23.7% 0.0% 39.0% 48.3% 41.7% 10.0% 19.2% 54.2% 27.1% 8.5% 10.2% 45.0%
RP MLB Percentile 75 12 43 0 23 88 92 0 68 8 25 16 15 9
RP MLB AVG 43.7% 21.7% 24.5% 10.2% 34.8% 41.0% 33.8% 25.3% 18.1% 62.8% 24.3% 5.9% 7.0% 36.9%
Career 45.1% 28.2% 26.8% 0.0% 42.3% 47.2% 43.1% 9.7% 19.8% 53.5% 25.4% 8.5% 12.7% 45.8%

Blas Castaño 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 .289 .376 .321 .367 .264 .359 .281 .416 92.7 91.3 7.0 28.6% 45.0% 31.8%
RP MLB Percentile 15 11 26 19 23 19 50 14 1 27 85 12 9 8
RP MLB AVG .241 .316 .288 .320 .236 .317 .280 .361 87.7 89.2 13.2 18.1% 36.9% 24.5%
Career .292 .392 .313 .361 .270 .379 .274 .425 92.5 91.2 9.1 26.3% 45.8% 32.7%

Blas Castaño 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 49.3% 65.6% 46.1% 27.6% 20.3% 19.2% 79.7% 87.3% 62.5% 19.5% 9.3% 28.9% 17.5% 59.2% 0.54 49.9%
RP MLB Percentile 93 73 33 15 18 68 18 23 30 93 15 56 56 64 66 41
RP MLB AVG 44.5% 63.7% 47.4% 31.6% 25.6% 18.1% 74.4% 83.8% 58.6% 16.3% 12.2% 28.5% 17.1% 58.3% 0.50 51.1%
Career 50.1% 65.1% 46.6% 26.0% 18.0% 19.8% 82.0% 88.6% 64.7% 18.6% 8.4% 27.0% 18.3% 58.5% 0.48 48.3%

Blas Castaño 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 49.3% 30.0% 27.1% 42.9% 30.9% 29.4% 39.7% 33.8% 39.1% 8.7%
RP MLB Percentile 93 21 47 77 25 3 45 81 19 95
RP MLB AVG 44.5% 34.6% 26.9% 38.5% 36.4% 22.9% 40.7% 29.8% 43.2% 6.6%
Career 50.1% 30.8% 27.7% 41.5% 29.5% 30.8% 39.7% 33.6% 38.7% 9.7%

Blas Castaño 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 58.3% 10.8% 30.9% 13.5% 65.1% 55.8% 27.5% 22.6% 16.0%
RP MLB Percentile 44 69 65 32 80 89 97 16 23
RP MLB AVG 58.5% 12.2% 29.8% 14.4% 60.8% 50.1% 21.1% 26.7% 19.2%
Career 59.0% 10.7% 30.3% 15.5% 63.7% 52.9% 25.9% 20.2% 15.1%

Blas Castaño 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 343 4.82 41.1% 22.2% 36.7% 4.4% 7.6% 4.5 -1 3.92
RP MLB Percentile 17 20 7 97 51 51 4 30 55 29
RP MLB AVG 660 4.94 45.9% 17.4% 36.7% 9.2% 4.7% 0.6 0 3.54
Career 393 4.78 40.5% 22.9% 36.6% 3.8% 7.1% 7.3 +1 4.02
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