2025 Stats
W-L
4-3
ERA
3.32
WHIP
1.30
K
50
SV
0
Rest-of-Season Projections
2025 Fantasy Outlook
Castillo, for all his abilities, has been rather inconsistent in recent seasons. He has made 30 or more starts in three of the past four seasons and in five of the last six full seasons, but he has just twice won 12 or more games, and his ERA has had a 1.3 run variance. The 2024 season was not his best effort, as a hamstring injury shut him down for good in mid-September. Sixteen of his 25 home runs were of the solo shot variety, yet he still had his highest ERA of the past three seasons. The related issue was a decline in strikeouts, as the 24.3 percent strikeout rate was three full percentage points down from his 2022 and 2023 efforts, and his lowest since that troublesome 2021 season with Cincinnati. A look at the numbers show the changeup, once his signature pitch, was arguable his worst pitch. Castillo is now primarily a fastball and slider guy, and while the four-seamer and slider duo has served him well the past two seasons, he needs a third pitch to re-emerge, as lefties were entirely too comfortable against him in 2024. This is not the making of a fantasy ace. Read Past Outlooks
Delivers quality start
Castillo did not factor in the decision during Sunday's loss to Houston. He allowed three runs on nine hits and a walk over six innings while striking out six.
ANALYSIS
Castillo coughed up a pair of runs in the third inning and one more in the sixth. He recorded his sixth quality start of the year and third in a row, but it wasn't a very efficient one. He threw a season-high 114 pitches (72 strikes) and worked around multiple threats. Castillo generated 14 whiffs, including eight with his fastball that averaged 96.4 mph. He's sporting a 3.32 ERA with a 50:21 K:BB through 62.1 frames. Castillo is lined up to face the Twins at home next weekend.
Castillo coughed up a pair of runs in the third inning and one more in the sixth. He recorded his sixth quality start of the year and third in a row, but it wasn't a very efficient one. He threw a season-high 114 pitches (72 strikes) and worked around multiple threats. Castillo generated 14 whiffs, including eight with his fastball that averaged 96.4 mph. He's sporting a 3.32 ERA with a 50:21 K:BB through 62.1 frames. Castillo is lined up to face the Twins at home next weekend.
Pitching Stats
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2024
2023
2022
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2020
2019
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2017
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
95
Last 10 Games
96
Last 5 Games
97
How many pitches does Luis Castillo generally throw?
1-10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121+
What part of the game does Luis Castillo generally pitch?
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2023
-14%
BAA vs RHP
2025
-4%
BAA vs LHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2023vs Left | .249 | 204 | 76 | 202 | 40 | |||
| Since 2023vs Right | .213 | 240 | 48 | 176 | 17 | |||
| 2025vs Left | .243 | 20 | 13 | 26 | 2 | |||
| 2025vs Right | .254 | 30 | 8 | 34 | 2 | |||
| 2024vs Left | .275 | 67 | 27 | 87 | 18 | |||
| 2024vs Right | .205 | 108 | 20 | 71 | 7 | |||
| 2023vs Left | .229 | 117 | 36 | 89 | 20 | |||
| 2023vs Right | .205 | 102 | 20 | 71 | 8 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2023
-23%
ERA at Home
2025
-36%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2023Home | 3.05 | 1.06 | 236.0 | 10.1 | 2.3 | ||||
| Since 2023Away | 3.94 | 1.27 | 198.2 | 8.1 | 2.9 | ||||
| 2025Home | 2.65 | 1.15 | 34.0 | 7.7 | 3.2 | ||||
| 2025Away | 4.13 | 1.48 | 28.1 | 6.7 | 2.9 | ||||
| 2024Home | 3.15 | 1.08 | 97.0 | 9.9 | 1.7 | ||||
| 2024Away | 4.25 | 1.28 | 78.1 | 7.8 | 3.3 | ||||
| 2023Home | 3.09 | 1.00 | 105.0 | 11.1 | 2.6 | ||||
| 2023Away | 3.62 | 1.21 | 92.0 | 8.7 | 2.5 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does Luis Castillo compare to other starting pitchers?
This section compares his stats with all starting pitcher seasons from the previous three seasons (minimum 120 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 120 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 120 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
2.38K/9
7.2BB/9
3.0HR/9
0.6Fastball
95.0 mphERA
3.32WHIP
1.30BABIP
.308GB/FB
1.16Left On Base
76.9%Exit Velocity
83.6 mphBarrels/BBE
5.5%Spin Rate
2148 rpmBalls Hit 95+ MPH
26.2%Swinging Strike
11.0%Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Past Fantasy Outlooks
2024
2023
2022
2021
2020
2019
2018
2017
The 31-year-old was acquired by the Mariners at the 2022 trade deadline and inked a five-year extension two months later; during his first full season with the team in 2023 he posted a 3.34 ERA, 1.10 WHIP and 219:56 K:BB in 197 innings. The campaign ended on a sour note, however, with nine runs allowed in Castillo's final two starts, including a 2.2-frame outing against Texas that eliminated Seattle from playoff contention. His strikeout and walk rates (27.3 percent and 7.0 percent, respectively) stayed stable, but his 1.3 HR/9 was the highest since his sophomore season in 2018. Castillo typically excelled at inducing groundballs while playing for the Reds with a career rate north of 50 percent, but he saw his flyball rate jump nearly nine points to 42.4 percent in 2023 while his groundball rate dipped below 40 percent. A barrel rate of 9.4 percent and hard-hit rate of 41.8 percent each represent career worsts, which also lines up with a 3.81 xFIP. Some regression may be in store for Castillo if he's unable to rein in those trends, but he's still likely a fairly safe bet for fantasy managers in 2024 given his track record.
More Fantasy News
Cruises to easy win
Castillo (4-3) yielded three hits over seven shutout frames while striking out five batters and picking up a win against the White Sox on Monday
ANALYSIS
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Turns in quality start
Castillo allowed a run on six hits and two walks while striking out six over six innings in a no-decision versus the Yankees on Wednesday.
ANALYSIS
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Labors early in loss
Castillo (3-3) allowed five runs on seven hits and two walks while striking out three over five innings to take the loss versus the Blue Jays on Friday.
ANALYSIS
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Logs another quality start
Castillo pitched six innings in a no-decision against Texas on Saturday, allowing one run on four hits and two walks while striking out two batters.
ANALYSIS
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Fires six scoreless frames
Castillo (3-2) earned the win against the Marlins on Saturday after giving up one hit and two walks over six scoreless innings. He struck out five.
ANALYSIS
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Latest Fantasy Rumors
Recent trade interest from Orioles
The Orioles and Mariners "have talked before and in recent days" about a trade that would send Castillo to Baltimore, Jon Morosi of MLB Network reports.
ANALYSIS
It's not clear whether some of those discussions took place after the Orioles signed Charlie Morton this past Friday. Castillo is owed $72.45 million over the next three years and has a full no-trade clause, complicating any potential deal. However, the Mariners have reportedly discussed him in trade scenarios this offseason, with the thought that they could either swap him for a bat or clear payroll space and sign a position player.
It's not clear whether some of those discussions took place after the Orioles signed Charlie Morton this past Friday. Castillo is owed $72.45 million over the next three years and has a full no-trade clause, complicating any potential deal. However, the Mariners have reportedly discussed him in trade scenarios this offseason, with the thought that they could either swap him for a bat or clear payroll space and sign a position player.