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2/20/2014 9:41 P.M. ET

Bettis looks to build on 2013 experience

SCOTTSDALE, Ariz. -- Rockies righty reliever Chad Bettis' first experience in the Majors last season produced some shining moments -- the 97-mph fastballs and the strong final three games: scoreless outings covering 2 2/3 innings, including solid innings in one-run victories over the Dodgers on Sept. 28 and 29.

But overall he was 1-3 with a 5.64 ERA in 16 games, the first eight of them starts. The Rockies determined that Bettis, 24, their second-round pick in 2010 out of Texas Tech, is better out of the bullpen and the life on his fastball supported that belief. But he also had a 9.00 ERA in relief.

Bettis now hopes to show how much he learned. What the Rockies believe will be a bright future -- some have tabbed him as a future closer -- will depend on how quickly he uses his experience to turn his talents into work that can be trusted late in games.

"That's a personal adjustment," Bettis said. "There are a lot of players, myself included, last year, [where] I needed to show that I belong up there. Now I feel that's different. I feel I do belong. Now it's how do we get better so that we can win every night."

Bettis believes he has the pitches, but needs to calmly work through game situations.

"Sometimes the game sped up on me. I needed to work on slowing everything down, especially in pressure situations," he said. "We really harped on all Spring Training and even up there, too, about keeping the ball down, moving it in and out and getting some ground balls. Keeping the ball down is good with ground balls, but also going inside for strikes with my fastball is going to be really good, as well. It's what I've been working on this offseason and I think it's going to really correlate.

"My changeup, I didn't really utilize it enough last year. I worked on my curveball and cutter more so than my change. Looking back at it, my changeup was my best pitch. This offseason I really feel like my fastball/changeup is my 1-2 punch now. I really worked on that pretty hard and got it to where I want it to go."

Masset aims to complete comeback with Rockies

SCOTTSDALE, Ariz. -- Nick Masset is finally past the search for answers and ready to resume what until 2012 was a career as a successful right-handed setup man.

Masset is competing for a spot in the Rockies' bullpen after missing 2012 because of a shoulder injury that required surgery and being out in 2013, but figuring out that thoracic outlet syndrome was what was delaying his rehab.

"It's definitely been a long road," Masset said. "Physically, mentally, the past couple of years have been a rollercoaster for me, a lot of ups and downs, a lot of smiles and cries. I'm feeling healthy."

Masset, 31, made 231 appearances for the Reds from 2009-11 (12-11, 3.15 ERA, 217 strikeouts in 223 innings) before suffering a shoulder injury with the Reds in '12.

"Our first attempt was to rehab it for the first two or three months, but in my last or second-to-last rehab game, I completely tore it," Masset said. "That was a tough break because I'd worked so hard to get back.

"I rehabbed all offseason and came into camp [in 2013] but I got to the point where everything was great playing catch, but every time I'd try to get off a mound, my arm wouldn't agree with me. Stark pain came out of nowhere. I went to see a lot of the best orthopedic guys in the country and they said, 'Your shoulder is as stable as can be. We don't see anything wrong.'"

Masset then noticed numbness in his right hand, which unlocked the problem. Thoracic outlet syndrome -- the condition that former Rockies pitcher Aaron Cook had when he had to be rushed to a hospital after a start a few years back -- was the problem. St. Louis vascular surgeon Dr. Robert Thompson, who did Cook's surgery and diagnosed right-hander Jhoulys Chacin's nerve issue in his chest in 2012, removed a top rib from the right side.

The Rockies monitored Masset's offseason throwing and signed him to a Minor League deal.

There is an opportunity not only for a job but for a prominent right-handed role.

Matt Belisle and Wilton Lopez were used frequently last year but both are coming off subpar seasons. Adam Ottavino pitched well and saw his roles increase in importance; he is versatile enough to handle single innings or multiple innings. Their roster spots are secure barring injury, although when they pitch will depend on performance.

Chad Bettis and Rob Scahill, two younger righties, saw regular duty at the end of last season, as did veteran Manuel Corpas. Masset is likely batting them to make the team.

Manager Walt Weiss is happy to have a proven pitcher such as Masset, who is 16-14 with a 3.78 ERA in his career with the Rangers (2006), White Sox ('07-08) and Reds ('08-11), as an option.

"He's missed some time the last couple of years, a lot of time, but we feel fortunate to have this guy in our camp," Weiss said. "We feel good about the fact we're landing pitchers that had other choices. He's one of those guys that maybe three, four, five years ago, we're not getting those guys. His track record late in games is very impressive."

Masset appreciates the chance to pitch.

"I'm very blessed and excited to be healthy again," Masset said. "It doesn't matter where I'm pitching in this bullpen. My stuff speaks for itself. They know what kind of stuff I have. If I stay healthy, I feel like I'm going to be as good, if not better, moving forward."

Weiss doesn't expect sophomore slump from Arenado

SCOTTSDALE, Ariz. -- Rockies manager Walt Weiss said the expectations of the second year in the Majors have swallowed up many a player coming off a good rookie campaign, but he believes third baseman Nolan Arenado can succeed.

Arenado, 22, became the first National League rookie to win the Rawlings Gold Glove Award. Offensively, at times he was impatient and ended up hitting .267 with a .301 on-base percentage, 10 home runs and 52 RBIs. A second-round pick out of El Toro (Calif.) High School in 2009, Arenado is expected to develop into a middle-of-the-order bat.

"Nolan, that stuff doesn't bother him, the expectations," Weiss said. "He almost thrives on it. You could see that in big situations last year."

Worth noting

• Rockies catcher Wilin Rosario was not at Thursday's workout. He returned to Denver to be with his wife, Genesis, who gave birth to the couple's second child on Tuesday. He should be back in time for Sunday's first full-squad workout.

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.