Mariners pitcher Taijuan Walker tossed two scoreless frames in his spring debut on Wednesday. 

Walker gave up just one hit during his two innings of work. He struck out two during the start. Walker is considered a strong favorite to open the season in the rotation, but is technically competing with Roenis Elias for the fifth spot. 

Walker said he was pretty amped for the start, but calmed down after the Mariners put an early run on the board. "The first inning I was up just because I was amped up for the first game and facing their best hitters and potential starting lineup," Walker said. But for the most part, I calmed down, especially after D.J. hit that home run. I was, 'Whew, OK, we got a run. Let's get 'em now.'"

Walker, 22, posted a 2.61 ERA over 38 innings last season.