Detroit Tigers left-hander Eduardo Rodriguez wasn't sharp in his third start since returning from the restricted list.
The 29-year-old only issued two walks in Thursday's start, but he allowed six runs and failed to pitch into the fifth inning. His competition, 25-year-old right-hander Logan Gilbert, twirled six scoreless innings for the Seattle Mariners.
The Tigers lost, 7-0, and were swept by the Mariners in three games at Comerica Park. Detroit's offense finished with four hits, one walk and 11 strikeouts; the defense committed two errors, including shortstop Javier Báez's MLB-leading 21st error.
"I don't think these guys have quit," manager A.