2023 Stats
W-L
14-7
ERA
3.06
WHIP
1.05
K
207
SV
0
Rest-of-Season Projections
2023 Fantasy Outlook
Castillo was slowed by a sore shoulder in spring training, which in turn made him a great bargain in fantasy drafts. He made his 2022 debut May 9 and really got into a groove in the weeks leading up to the trade deadline, posting a 1.59 ERA, 0.97 WHIP and 41:10 K:BB in what would turn out to be his final five starts for Cincinnati. The Mariners spent a pretty penny in prospect capital to acquire Castillo and the right-hander paid immediate dividends, helping the team to the ALDS. With Castillo, the name of the game is the world-class changeup, set up by a good fastball at 97 mph. The skills only got better after the move to Seattle and the park upgrade is massive. It will be exciting to see what Castillo can do at age 30 in his first full season with a legitimate contender. Read Past Outlooks

Cruises to win
Castillo (14-7) allowed two runs on five hits and three walks while striking out eight over seven innings to earn the win Tuesday over the Athletics.
ANALYSIS
Castillo earned his fifth quality start in his last six outings with a solid performance Tuesday. It took the Athletics until the seventh inning to get on the board, and the Mariners' lead was never in any real danger. Castillo now has a 3.06 ERA, 1.05 WHIP and 207:50 K:BB through 188.1 innings across 31 starts this season. He's lined up for a critical home start versus the Astros early next week as the Mariners continue to battle for the AL West lead.
Castillo earned his fifth quality start in his last six outings with a solid performance Tuesday. It took the Athletics until the seventh inning to get on the board, and the Mariners' lead was never in any real danger. Castillo now has a 3.06 ERA, 1.05 WHIP and 207:50 K:BB through 188.1 innings across 31 starts this season. He's lined up for a critical home start versus the Astros early next week as the Mariners continue to battle for the AL West lead.
Pitching Stats
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2023
2022
2021
2020
2019
2018
2017
2023 MLB Game Log
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Minor League Game Log

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Pitching Appearances Breakdown
Average Pitch Count
98
Last 10 Games
99
Last 5 Games
99
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 2021
-2%
BAA vs LHP
2023
-9%
BAA vs RHP
BAA | K | BB | H | HR | ||||
---|---|---|---|---|---|---|---|---|
Since 2021vs Left | .225 | 287 | 112 | 222 | 33 | |||
Since 2021vs Right | .229 | 279 | 58 | 224 | 25 | |||
2023vs Left | .220 | 114 | 33 | 82 | 18 | |||
2023vs Right | .201 | 93 | 17 | 65 | 8 | |||
2022vs Left | .206 | 77 | 25 | 55 | 8 | |||
2022vs Right | .217 | 90 | 20 | 63 | 5 | |||
2021vs Left | .245 | 96 | 54 | 85 | 7 | |||
2021vs Right | .264 | 96 | 21 | 96 | 12 | |||
More Splits→ | View More Split Stats |
Home/Away Pitching Splits
Since 2021
-29%
ERA at Home
2023
-30%
ERA at Home
ERA | WHIP | IP | K/9 | BB/9 | |||||
---|---|---|---|---|---|---|---|---|---|
Since 2021Home | 2.81 | 1.08 | 269.0 | 10.6 | 2.8 | ||||
Since 2021Away | 3.95 | 1.26 | 257.1 | 8.7 | 3.0 | ||||
2023Home | 2.52 | 0.89 | 96.1 | 11.0 | 2.2 | ||||
2023Away | 3.62 | 1.21 | 92.0 | 8.7 | 2.5 | ||||
2022Home | 2.69 | 0.98 | 73.2 | 10.6 | 2.4 | ||||
2022Away | 3.29 | 1.19 | 76.2 | 9.4 | 2.9 | ||||
2021Home | 3.18 | 1.34 | 99.0 | 10.1 | 3.5 | ||||
2021Away | 4.87 | 1.39 | 88.2 | 8.2 | 3.7 | ||||
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
4.14K/9
9.9BB/9
2.4HR/9
1.2Fastball
96.2 mphERA
3.06WHIP
1.05BABIP
.272GB/FB
1.05Left On Base
77.8%Exit Velocity
82.8 mphBarrels/BBE
5.1%Spin Rate
2198 rpmBalls Hit 95+ MPH
23.4%Swinging Strike
15.3%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
2022
2021
2020
2019
2018
2017
Castillo was the worst starting pitcher in the majors through May, posting a 7.22 ERA and 1.78 WHIP over 52 innings. Over the final four months, he was a near ace, posting a 2.73 ERA, 1.20 WHIP and 144 strikeouts in 135.1 innings. Unfortunately, those first two months counted and wreaked havoc, and it's not the first time he has gotten off to a horrific start. It's been suggested by Castillo's agent and others that he's a warm-weather pitcher, and there might be something to that - his velocity was much lower in April and May, especially his peak velocity. There's another big warning sign for Castillo - the diminished effectiveness of his best pitch, his changeup. His K% on that pitch has dropped from 47% in 2019, to 40% in 2020, and all the way down to 28.2% in 2021. When Castillo's draft cost rises in March along with other purported aces, be sure not to get caught up in that inflation.
More Fantasy News

Strikes out eight in win
Castillo (13-7) earned the win Wednesday, allowing two runs on three hits and three walks over six innings in a 3-2 victory over the Angels. He struck out eight.
ANALYSIS
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Six scoreless in win
Castillo (12-7) earned the win Thursday, allowing four hits and four walks over six scoreless innings against the Rays. He struck out eight.
ANALYSIS
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Five earned runs in no-decision
Castillo did not factor into the decision Saturday, allowing five runs on eight hits and two walks over five innings in an 8-7 win over the Mets. He struck out two.
ANALYSIS
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Fires seven shutout innings
Castillo (11-7) allowed a hit and one walk over seven scoreless frames Sunday, striking out six and earning a win over the Royals.
ANALYSIS
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Cruises to victory
Castillo (10-7) yielded one run on five hits over seven innings Monday, striking out nine and earning a win over the White Sox.
ANALYSIS
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