For a while, it was expected that Zimmer might have a chance to jump right into the Royals' starting rotation. After being promoted from Class A Advanced Wilmington to Double-A Northwest Arkansas, he'd posted a 1.93 ERA in four games before being shut down because of an aching shoulder.
"Going through my throwing in December and the beginning of January, I started having a little bit of discomfort similar to the end of last year," Zimmer said. "But I went to Kansas City and got it checked out, and everything structurally is fine. They decided they were going take it a little bit slower. Basically what they told me is my innings are more important to them at the end of the year than right now at the start."
So Zimmer doesn't know yet if he'll even get into any Cactus League games. The idea is to have him be going full-bore by the All-Star break or so. In short, if he does well in the Minors and if the Royals need an arm for the stretch run, he might get the call.
"So I think it's going to work out well in terms of my innings limit and everything else. I'll be able to hit stride at the end of the year, when it actually matters for me," he said.
Zimmer, 22, is still getting accustomed to the demands of pitching. He didn't take up the position until his freshman year at the University of San Francisco.
Why did it take him so long to get around to pitching?
"That's a good question. I was hitting the ball too far," he said with a chuckle. "I was just always a hitter growing up, I just never thought about pitching. When I got to USF my freshman year, I went there as a third baseman, and the guy that was starting over me was a junior and had a bunch of home runs the year before and it was obvious I wasn't going to start over him in my freshman year. They saw me throwing it across the infield pretty good and had me try a couple of bullpens and throw a few intrasquad games, and I guess they saw a little potential there and decided to have me stick to it."
Zimmer confided bluntly: "I did not like it at first."
But it turned out pretty well -- Zimmer was the Royals' first-round Draft choice in 2012 after barely three years of pitching.
"So I'm still relatively new to it, but it's great just being around some of these old guys and picking up tidbits here and there as I can," he said, glancing around the Royals' clubhouse. "Just being around in the atmosphere of getting going is fun."
Even though the brakes have been applied in Spring Training, Zimmer is considered to be on a fast track to the Majors.
"I don't really think about it too much," he said. "I just go out there every day when I get to have the ball on the mound and go out and compete. Just try to attack the strike zone and it's not my decision whenever I get moved up or anything like that. I just go about my business as usual and when my time comes, I'll be ready to go."