SP - Seattle Mariners
- Age 33
- Bats: R
- Throws: R
2026 Outlook
- Draft Rank (ECR)
- P #40
- Best / Worst
- #32 / #71
- ADP
- #141
Eligibility
- Yahoo
- SP
- ESPN
- SP
- CBS
- SP
Availability
Expert Note
View More NotesLuis Castillo remains a reliable innings-eater, but his 2025 profile showed continued erosion in strikeout rate (21.7% K%) and rising hard contact (46.5% HardHit), limiting his fantasy ceiling. While his command stayed strong and ERA stability persists, the whiff decline and increasing fly-ball tendencies have pushed him further from ace territory. The 2026 projections reflect more of the same: solid ratios and workload, but middling strikeout totals compared to the top fantasy arms. Castillo is still a dependable rotation anchor in deeper formats, though fantasy managers should no longer pay for peak-era upside.
Player News
View More NewsLuis Castillo not expected to be traded by Mariners
The Mariners are not expected to trade Luis Castillo.
Fantasy Impact
Castillo has found his name in the middle of trade rumors over the past couple of seasons. He is coming off another steady year, posting a 3.54 ERA over 32 starts. He has remained the workhorse in the Mariners starting rotation. There have continued to be rumors of Seattle possibly trading a pitcher for a bat each of the past couple of seasons.
Recent Articles
View More Articles | We will be running a fantasy baseball mock draft using FantasyPros’ Draft Wizard tool. We’ll draft for a 12-team, head-to-head points league with the following positions: 1-C, 1-1B, 1-2B, 1-3B, 1-SS, 3-OF, 1-UTIL, 6-Pitchers and three bench spots. I’m drafting … read more »  by in Fantasy1 wk ago |
Rankings
View More Rankings| ECR | Best | Worst | # of Experts | |
|---|---|---|---|---|
| Draft | #124 | #88 | #174 | 19 |
| Rest of Season | - | - | - | - |
| Dynasty | #206 | #191 | #206 | 2 |
ECR vs ADP
| G | GS | W | L | SV | BS | HD | IP | H | ER | HR | BB | K | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 30 | 30 | 11 | 9 | 0 | 0 | 0 | 175.6 | 159 | 72 | 24 | 49 | 165 | 3.69 | 1.19 |
Stats
View More Stats| Pitching Stats | |||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | G | GS | W | L | SV | IP | H | R | ER | HR | BB | BB% | K | K% | ERA | WHIP | ||||||
| 2023 | SEA | 33 | 33 | 14 | 9 | 0 | 197 | 160 | 81 | 73 | 28 | 56 | 6.98 | 219 | 27.31 | 3.34 | 1.10 | ||||||
| 2024 | SEA | 30 | 30 | 11 | 12 | 0 | 175.1 | 158 | 73 | 71 | 25 | 47 | 6.54 | 175 | 24.34 | 3.64 | 1.17 | ||||||
| 2025 | SEA | 32 | 32 | 11 | 8 | 0 | 180.2 | 168 | 76 | 71 | 23 | 46 | 6.17 | 162 | 21.74 | 3.54 | 1.18 | ||||||
History
Game Log
View More Games| Game | OPP | Score | DEC | IP | H | R | ER | HR | BB | K | ERA | WHIP |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wed, Sep 24 | vs. COL | - | W | 7.1 | 1 | 1 | 1 | 1 | 0 | 10 | 1.23 | 0.14 |
| Thu, Sep 18 | @ KC | - | W | 6.0 | 3 | 0 | 0 | 0 | 0 | 3 | 0.00 | 0.50 |
| Fri, Sep 12 | vs. LAA | - | - | 6.0 | 3 | 1 | 1 | 0 | 2 | 5 | 1.50 | 0.83 |
| Sun, Sep 7 | @ ATL | - | W | 6.0 | 4 | 1 | 1 | 1 | 0 | 6 | 1.50 | 0.67 |
Game Schedule
View Schedule| Game | Opp. Team | ||||
|---|---|---|---|---|---|
| Date | Opp | Time | Pitcher | VBR | Matchup |
| Thu, Mar 26th | vs CLE | 10:10pm | |||
| Fri, Mar 27th | vs CLE | 9:45pm | |||
| Sat, Mar 28th | vs CLE | 9:40pm | |||
| Sun, Mar 29th | vs CLE | 7:20pm | |||
