The Mariners have optioned starter Brandon Maurer to Triple-A Tacoma, MLB.com reports.
Maurer took a beating with Seattle. The rookie allowed 40 runs (38 earned) in 49 1/3 innings, a 6.93 ERA. He served up 10 home runs in as many starts. He likely remains in the Mariners future plans, but he'll need some minor league seasoning if he is to be a useful major-league starter.