Castillo did not factor into Sunday's decision against the Tigers, allowing one run on two hits and one walk while striking out five across 5.2 innings. Castillo had worked behind Bryce Miller in each of his three prior outings, but the former was on the mound for the start of Sunday's series finale. Castillo limited the Tigers to just three baserunners across five-plus innings while inducing 12 whiffs, and he reached 100 pitches for the third time this season. He now sits at a 5.16 ERA and 1.36 WHIP across 61 innings, and his next appearance is slated for next weekend on the road against the Nationals.
Luis Castillo: Everything you need to know
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Status
ACTIVESTATS
Luis Castillo Game Log 2026
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PreseasonDateOppResultIPKBBHBPCGSHOHRER3/23L 10-35.0511004113/17L 9-64.0110005223/17W 10-60.0000000003/11L 11-73.1310004223/5L 27-61.1210006652/27L 3-11.120000433
Preseason Totals 14.3134100231413 -
Regular SeasonDateOppResultIPKBBHBPCGSHOHRER6/7L 5-45.2510002115/31W 3-25.0320002215/250-02.0210001005/19L 2-12.1421001225/14W 8-35.2630004335/9L 6-14.0601005445/3L 4-16.0521006444/27L 11-45.0321007774/21L 5-25.0620005224/16L 5-25.1330007414/11W 8-73.13100010774/5L 8-73.2411006433/30W 2-16.072000300
Regular Season Totals 56.95722500594035
Luis Castillo Splits 2026
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SplitsGSIPWLERAKBBHBPCGHRERSVOSAVGHR
Overall 1161.0250.0612350604035100.2528Away 733.1130.0331200332319000.2446Home 427.2120.0281100271716100.2622Night 735.0040.0381400402623000.2806Day 426.0210.023900201412100.2112vs Lefty 00.0000.027143031220000.2486vs Righty 00.0000.03492029180000.2572March 16.0000.07200300000.1580April 522.1020.019900352420000.3474May 427.0230.0301100201514100.2043June 15.2000.05100211000.1001Opponent vs HOU 2 9.0 1 0 0.0 9 4 0 0 14 10 10 0 0 0.341 2 vs NYY 1 6.0 0 0 0.0 7 2 0 0 3 0 0 0 0 0.158 0 vs LAA 1 3.2 0 0 0.0 4 1 0 0 6 4 3 0 0 0.353 0 vs CWS 1 6.1 0 2 0.0 10 2 0 0 6 6 6 0 0 0.240 2 vs AZ 0 5.0 1 0 0.0 3 2 0 0 2 2 1 1 0 0.133 0 vs MIN 1 5.0 0 1 0.0 3 2 0 0 7 7 7 0 0 0.318 2 vs KC 1 6.0 0 1 0.0 5 2 0 0 6 4 4 0 0 0.273 0 vs DET 1 5.2 0 0 0.0 5 1 0 0 2 1 1 0 0 0.100 1 vs ATH 2 9.0 0 0 0.0 12 4 0 0 7 2 2 0 0 0.206 1 vs SD 1 5.1 0 1 0.0 3 3 0 0 7 4 1 0 0 0.304 0 Venue @ Athletics 1 4.0 0 0 0.0 6 2 0 0 2 0 0 0 0 0.133 0 @ Detroit 1 5.2 0 0 0.0 5 1 0 0 2 1 1 0 0 0.100 1 @ Minnesota 1 5.0 0 1 0.0 3 2 0 0 7 7 7 0 0 0.318 2 @ Los Angeles 1 3.2 0 0 0.0 4 1 0 0 6 4 3 0 0 0.353 0 @ Seattle 4 27.2 1 2 0.0 28 11 0 0 27 17 16 1 0 0.262 2 @ Chicago 1 4.0 0 1 0.0 6 0 0 0 5 4 4 0 0 0.294 2 @ San Diego 1 5.1 0 1 0.0 3 3 0 0 7 4 1 0 0 0.304 0 @ Houston 1 5.2 1 0 0.0 6 3 0 0 4 3 3 0 0 0.190 1
Luis Castillo Player Profile
Career History
Luis Castillo: Breaking News
Receiving start Sunday
Castillo is slated to start Sunday's game against the Tigers, Adam Jude of The Seattle Times reports. Castillo and Bryce Miller worked in tandem in each of the previous three turns through the rotation, but both pitchers will receive standalone starts during the final two games of the series in Detroit. Though he currently maintains an ugly 5.53 ERA and 1.45 WHIP on the season, Castillo took some steps forward over his last two outings, covering nine innings between a start and relief appearance behind Miller while striking out nine batters and yielding two runs (one earned) on four hits and four walks. Mariners manager Dan Wilson hasn't outlined his plans for the rotation beyond this weekend, so Castillo could need another positive showing in Detroit to avoid falling back into a piggyback arrangement with Miller or shifting into a full-time bullpen role.
Snags extra-inning win
Castillo (2-5) allowed two runs (one earned) on two hits and two walks with three strikeouts over five innings of relief, earning the win despite taking a blown save Sunday versus the Diamondbacks. Castillo couldn't hold the 1-0 lead in the sixth inning after Bryce Miller's five frames of one-hit ball. This was still a positive showing for Castillo, who has given up just four runs (three earned) over 11.1 innings while adding a 13:6 K:BB over his last three appearances. He has a 5.53 ERA, 1.45 WHIP and 56:22 K:BB across 55.1 innings through 12 outings (10 starts) this year. The Mariners' fifth spot in the rotation is set to come up again on the road versus the Tigers -- if the team continues to deploy a tandem, Castillo and Miller would likely share another game despite the pitchers' discomfort with the ongoing arrangement.