Heston was sent back to Tacoma after getting roughed up during his spot start against the White Sox on Sunday, allowing seven runs through three innings while walking four batters and only striking out two. Given he has made two appearances for the big club this season and conceded 12 runs across just five innings, the Mariners may decide to look elsewhere should they need another spot starter. Emilio Pagan was recalled from Triple-A to take his spot on the roster for the time being.
