Worth noting

• Rockies shortstop Troy Tulowitzki is playing for his littlest supporter this season. Tulowitzki and his wife, Danyll, welcomed their first child, a baby boy named Taz, on Jan. 9.

"It's been good so far," said Tulowitzki, wearing a purple T-shirt with his son's name on the front. "It's special to be a father, puts things in perspective. I'm excited to play my first season with him watching me. It's something I'll always remember."

Tulowitzki loves the unique name.

"It's something we came up with -- we wanted a short first name, something different," Tulowitzki said. "It goes good with the last name, and I always keep a 'T' in the name. My middle name is Trevor, his is Tatum -- all T's."

• Rosario reported to camp about 10 pounds lighter than his playing weight last year. Some players report heavier because they tend to lose weight in the first month, but Weiss does not worry that it'll happen to the still-burly Rosario.

"A lot of it comes down to their body type," Weiss said. "He'll maintain his weight. He's a short, stocky guy, so I don't think he has a problem holding onto his weight during the season. For him, it was just a matter of coming in physically stronger, if that's possible."

Thomas Harding is a reporter for MLB.com. Follow him on Twitter @harding_at_mlb. This story was not subject to the approval of Major League Baseball or its clubs.