Zach Eflin tied for the American League lead with his 14h win, and the Tampa Bay Rays beat the Mariners 6-3 on Sunday to take three of four in a series between playoff contenders.
Bryce Miller tossed five sharp innings, Cal Raleigh hit his 12th home run as the Seattle Mariners avoided a three-game sweep with a 2-0 win over the Detroit Tigers.
Corey Perry, Brayden Point and Ross Colton scored 3:23 apart in the second period, Nikita Kucherov had three assists and the Tampa Bay Lightning beat the Seattle Kraken 6-2.
The Seattle Mariners claimed left-handed pitcher Gabe Speier off waivers from Kansas City and acquired right-handed pitcher Easton McGee from Boston in exchange for cash.
Luis Castillo got knocked out in the fifth inning and the contending Mariners managed just one hit, falling to the Oakland Athletics 4-1 on Tuesday night.
Luis Rengifo hit a pair of home runs for the second time in three games, Livan Soto went deep for the first time and the LA Angels won their third in a row over the wild card-chasing Seattle Mariners, 5-1.
Julio Rodriguez and Eugenio Suarez each hit their second home run of the game, connecting in the ninth inning and rallying the Seattle Mariners over the Atlanta Braves 8-7.