Coulombe has earned a spot on the Athletics' Opening Day roster, John Hickey of the Bay Area News Group reports.
This isn't too much of a surprise, as Coulombe is the only lefty other than Sean Doolittle projected in the Athletics' bullpen. The 27-year-old's roster status was in question after he allowed eight runs over a four-game span (4.2 innings) earlier in spring training, but he bounced back by allowing just one run over his final 8.1 innings to solidify his roster spot.