"I had some sunflower seeds in the bullpen [on Sunday]," Collmenter said. "I never had sunflower seeds during a game when I was starting. It's getting used to doing different things. Good thing I'm not that superstitious about stuff."
Collmenter, 25, made his Major League debut on Sunday and earned his first career victory in the D-backs' 6-5, 12-inning win over the Giants. He pitched two perfect innings with two strikeouts and secured a couple of baseballs and the lineup card for his trophy case.
Although Collmenter pitched out of the bullpen in Spring Training, he's still getting acclimated to the role, particularly when it comes to his pregame preparation.
"It's such a quick rush," he said. "That makes it pretty exciting. You're just a phone call away. As a starter you have so much more preparation."
Manager Kirk Gibson likes what he's seen from Collmenter, on and off the mound.
"His arm angle is really funky," Gibson said. "He did a really good job [on Sunday] of establishing his changeup early on, and his fastball was really effective after that. He's got a lot of character. He's not shy. He's just a very confident kid."