The Detroit Tigers' losing streak has reached six games.
The Tigers blew a 2-0 lead and lost 3-2 in 10 innings to the Mariners in Seattle on Sunday in Major League Baseball action.
Detroit was swept in the four-game series and has lost 12 of its last 13 games.
Starter Matthew Boyd struck out 10 Mariners' batters in six-and-a-third innings of work, surrendering just one run.
Niko Goodrum opened the scoring for Detroit with his 10th home run of the season, sending the first pitch he saw from Tommy Millone over the way in right-centre.
The Tigers open a three-game series at the Los Angeles Angels Monday night.
In other MLB action on Sunday, the Toronto Blue Jays lost 10-9 to the Tampa Bay Rays.