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On Thursday, Marquez gave the Rockies plenty to think about, allowing four hits in three scoreless in a "B" game against the Cubs. He walked one batter and struck out four.
"He's got a big-time arm and easy velocity," manager Walt Weiss said. "He's another one of our young kids that looks unaffected by the Major League environment and I mean that in a very good way. He's very composed and his stuff is electric at times."
Marquez, 21, who was acquired as part of the Corey Dickerson trade with the Rays, struck out three in two scoreless innings against the Dodgers on Sunday. How long he stays in big league camp is unknown. The Rockies are expected to trim the roster again Friday.
"I feel good about the veteran guys in that clubhouse that the veteran guys are looking up to as examples," Weiss said. "I take a lot of comfort in those guys we have setting the example and setting the tone, raising the bar. It makes me sleep well at night knowing we have young guys like Marquez can look up to the type of guys we have."
Ranked No. 14 on Colorado's prospect list by MLBPipeline.com, Marquez signed with the Rays for $225,000 out of Venezuela in 2011. He went 7-13 with a 3.56 ERA and 104 strikeouts against 29 walks in 139 innings at Class A Charlotte in the Rays' system last season.
Marquez 14-27 with a 3.88 ERA in 324 2/3 innings in the Minors since making his professional debut in 2012.
"My goal, like everyone's goal, is to make it to the Major Leagues and stay there," Marquez said. "Honestly, there is always a change when you go from one team to the next, but I feel like I'm getting used to it and the people here have made it easy. I understand that this is a business so I was not shocked when I got traded."
• Right-hander David Hale (hamstring) and left-hander Boone Logan (elbow) made their first appearance of spring in Thursday's "B" game against the Cubs. Logan allowed one run on one hit in one-third of an inning. Hale gave up one hit and struck out one in 1 2/3 innings.
"Hale, yes. He's good to go," Weiss said. "We've got to keep an eye on him with some of the peripheral stuff -- pitchers aren't hitting yet -- but covering first base and fielding and those types of things."