With the Rockies in 2014, Logan went to the disabled list four times -- three times with elbow issues, once with a digestive ailment. The season (2-3, 6.84 in 35 games) ended in September with a surgery to shave a bone spur in the elbow.
Logan, 30, was as disappointed with the lack of time with his teammates as he was with the lack of health.
"I went into the offseason reflecting on my season last year -- not really my injury or how I performed but how I was as a teammate," Logan said. "It's tough when these guys haven't even known me for a whole season yet. It's easy to not feel close to somebody that you don't know, and then they're hurt all year and you never see them.
"It's tough to put in any advice or put in two cents with anything else, because I've always been a guy that, after hearing that from someone, I'd probably tell him to go kick rocks. But I'm looking forward to this year, to show who I am, as a person, as a teammate and as a pitcher."
But manager Walt Weiss said the Rockies did see a snippet of what Logan can do -- scoreless for his first six appearances, a .205 opponents' batting average through his first 16.
"He's been really good in this league before, and we're expecting him to get back there," Weiss said.
Logan said his arm will never be 100 percent, but he began throwing in December and sees far greater progress than this time last year.
"It was something I was reminded of every second of the day, from when I got up to when I went to sleep, waking up in the middle of the night last year," Logan said. "The difference is I'm coming to spring and competing again. I feel I have something to prove."
Thomas Harding is a reporter for MLB.com. Read his blog, Hardball in the Rockies, follow him on Twitter @harding_at_mlb, and like his Facebook page, Thomas Harding and Friends at www.Rockies.com. This story was not subject to the approval of Major League Baseball or its clubs.