Walker allowed one run on three hits and two walks while striking out three over six innings Sunday, but he didn't earn the decision in the Diamondbacks' win against St. Louis.
Walker didn't get enough run support to pick up the win, but he was able to keep the Diamondbacks in the game until they eventually pulled away in the eighth inning. He's started the season on a positive note, giving up four runs and striking out seven across 11 innings. The 25-year-old's next start figures to come Saturday against the Dodgers, when he'll look to pick up his first win of the season.