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Blas Castaño

#63 - Relief Pitcher

Colorado Rockies

Bats / Throws Right / Right
Date of Birth 9/8/1998 (28)
Height, Weight 5'10", 162 lb
Hometown Espaillat, DOM

2026 Season Stats

MLB Rank MLB Average
Sv IP ERA WHIP K% BB%
0 27.1 3.62 1.32 18.9% 8.1%
221st 3
Sv
292nd 52.0
IP
128th 4.19
ERA
165th 1.34
WHIP
251st 22.7%
K%
115th 9.8%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
94.1 8.9% 27.0% 49.3% 8.3% 4.78 4.13
178th 94.7
FB MPH
313th 12.2%
SwStr%
243rd 28.5%
CSW%
252nd 51.2%
Str-ICR
341st 4.7%
MTK%
297th 4.94
PLV
276th 3.56
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 15 0 27.1 2-0 0 0 3.62 1.32 4.69 4.69 4.62 4.13 18.9% 8.1% 8.9 1.32 .307 19.0% 80.2% 45.6% 44.9% 8.9% 27.0% 0.50 4.78
RP MLB Percentile 5 0 16 30-85 0 0 63 51 23 25 29 21 28 66 33 31 36 39 83 4 53 10 29 50 13
RP MLB AVG 42 2 52.0 3-3 3 7 4.19 1.34 4.16 4.17 4.24 3.56 22.7% 9.8% 8.3 1.08 .291 17.6% 72.5% 36.8% 44.0% 12.2% 28.5% 0.50 4.94
Career 16 0 30.1 2-0 0 0 4.15 1.38 5.17 5.18 5.10 4.19 17.3% 8.7% 9.2 1.48 .302 19.2% 78.9% 46.2% 42.2% 8.2% 25.7% 0.45 4.75

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 15 0 27.1 2-0 0 0 0 460 299 161 111 27 18 3 2 4 21 9 2 0
RP MLB Percentile 5 0 16 30-85 0 0 0 15 16 85 13 78 78 88 7 59 11 89 46 78
RP MLB AVG 42 2 52.0 3-3 0 3 7 884 565 319 227 48 32 9 1 6 52 21 3 2
Career 16 0 30.1 2-0 0 0 0 510 330 180 127 31 19 5 2 5 22 11 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 18.9% 8.1% .273 .465 .807 .351 .307 .342 .253 .341 .275 .382 91.3 90.5 8.4 4.69
RP MLB Percentile 28 66 22 15 18 17 36 29 28 23 57 27 1 30 78 23
RP MLB AVG 22.7% 9.8% .241 .389 .712 .314 .291 .321 .235 .314 .280 .358 87.6 89.3 13.1 4.16
Career 17.3% 8.7% .277 .491 .845 .366 .302 .341 .259 .360 .271 .394 91.3 90.6 9.9 5.17

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 COL12.2% (94.5)40.2% (94.1)13.9% (90.5)-23.5% (82.8)-10.2% (89.0)-- 52.4% 47.6%
RP MLB Percentile 4 (45) 82 (48) 35 (66) - 62 (56) - 29 (78) - - 61.4% 38.9%
RP MLB AVG 38.7% (94.7) 26.6% (94.1) 19.7% (89.4) 25.9% (86.1) 20.7% (82.3) 15.3% (80.3) 17.7% (86.1) 18.9% (86.6) 42.7% (61.5) 48.7% 51.2%
Career12.0% (94.4)36.9% (94.1)16.5% (90.3)-22.4% (82.7)-12.4% (88.9)-- 48.8% 51.2%

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 COL23.2% (4)29.2% (12)28.1% (5)-26.9% (16)-21.3% (4)-- 27.8% 26.0%
RP MLB Percentile 15 (1) 59 (37) 55 (60) - 38 (42) - 43 (70) - - 49.1% 26.0%
RP MLB AVG 27.2% (32) 27.6% (13) 27.0% (15) 29.7% (28) 28.5% (20) 27.3% (15) 22.4% (21) 22.7% (21) 19.3% (9) 27.9% 28.8%
Career21.3% (4)28.7% (12)27.4% (5)-26.3% (16)-17.5% (5)-- 26.9% 24.5%

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 44.9% 26.9% 26.9% 1.3% 39.7% 44.3% 39.2% 16.5% 20.9% 53.8% 25.6% 11.5% 9.0% 45.6%
RP MLB Percentile 53 9 73 0 15 76 89 3 89 4 38 1 17 4
RP MLB AVG 44.0% 21.7% 24.1% 10.2% 34.6% 40.9% 33.7% 25.4% 18.1% 63.0% 24.5% 5.8% 6.8% 36.8%
Career 42.2% 27.8% 28.9% 1.1% 42.2% 44.0% 40.7% 15.4% 21.2% 53.3% 24.4% 11.1% 11.1% 46.2%

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 .273 .351 .307 .342 .253 .341 .275 .382 91.3 90.5 8.4 19.0% 45.6% 32.4%
RP MLB Percentile 22 17 36 29 28 23 57 27 1 30 78 39 4 3
RP MLB AVG .241 .314 .291 .321 .235 .314 .280 .358 87.6 89.3 13.1 17.6% 36.8% 24.4%
Career .277 .366 .302 .341 .259 .360 .271 .394 91.3 90.6 9.9 19.2% 46.2% 33.1%

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 48.0% 65.0% 47.0% 28.0% 19.0% 20.9% 81.0% 86.6% 68.7% 18.0% 8.9% 27.0% 17.2% 59.1% 0.50 49.3%
RP MLB Percentile 86 65 44 17 11 89 11 29 10 76 10 29 52 60 50 27
RP MLB AVG 44.5% 63.8% 47.4% 31.7% 25.6% 18.1% 74.4% 83.9% 58.5% 16.4% 12.2% 28.5% 17.1% 58.3% 0.50 51.2%
Career 48.8% 64.7% 47.3% 26.8% 17.4% 21.2% 82.6% 87.7% 70.0% 17.5% 8.2% 25.7% 17.8% 58.6% 0.45 48.2%

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 48.0% 30.9% 25.4% 43.7% 30.2% 27.4% 42.4% 35.0% 39.6% 7.8%
RP MLB Percentile 86 27 67 81 21 7 60 88 21 85
RP MLB AVG 44.5% 34.6% 27.0% 38.4% 36.2% 22.9% 40.9% 29.9% 43.1% 6.6%
Career 48.8% 31.4% 26.1% 42.5% 29.2% 28.6% 42.2% 34.7% 39.2% 8.6%

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 57.2% 10.9% 32.0% 12.9% 64.3% 55.4% 25.5% 22.4% 14.3%
RP MLB Percentile 27 69 79 24 76 89 93 15 10
RP MLB AVG 58.5% 12.1% 29.9% 14.5% 61.0% 50.1% 21.1% 26.7% 19.3%
Career 57.8% 10.8% 31.4% 14.6% 63.3% 53.1% 24.4% 20.6% 13.8%

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 460 4.78 41.1% 20.4% 38.5% 2.6% 8.3% 2.7 -3 4.13
RP MLB Percentile 15 13 4 93 31 31 2 38 64 21
RP MLB AVG 884 4.94 45.9% 17.4% 36.8% 9.1% 4.7% 0.6 -1 3.56
Career 510 4.75 40.6% 21.2% 38.2% 2.4% 7.8% 5.5 -2 4.19
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