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2/22/2014 4:24 P.M. ET

Giants ink Colvin to Minor League deal

SCOTTSDALE, Ariz. -- Looking to bolster their outfield depth and increase competition, the Giants signed Tyler Colvin to a Minor League contract Saturday. Colvin is expected in big league camp Sunday.

Colvin hit 20 home runs for the Cubs in 2011, his first full season in the Majors, and 18 with an .858 OPS in just 420 at-bats for the Rockies in '12.

"I've always liked his bat and the pop from it," manager Bruce Bochy said. "He's an experienced player with a good bat. We're glad to have him here to give us some depth. He'll be in the mix."

Colvin fell on hard times last season, when he spent most of the year in Triple-A or on the disabled list. The left-handed hitter had a .160 average in 27 games with Colorado.

Colvin, 28, agreed to a Major League deal with the Orioles on Jan. 15. But Baltimore backed off after a physical apparently revealed back issues.

Tightness in his back cut short Colvin's 2013 season, but he said he feels good now.

"I know how my body feels. For somebody to tell me otherwise ... I'm ready to go," Colvin said. "I hurt it in Triple-A. Honestly, I just didn't stretch after a long rain delay. I got healed up and played one game, and that's when I got designated [for assignment]."

Colvin will wear No. 88 during Spring Training, a reminder of the work left to do.

"It definitely gives me something to work for," Colvin said. "Being No. 88 in camp is motivation to make the team and not [just] get noticed, but get back to where I was."

Perez's glove could boost him in outfield competition

SCOTTSDALE, Ariz. -- Juan Perez could look at Michael Morse as competition. But in reality, the Giants' offseason signing of Morse could help Perez make his first Opening Day roster.

Morse was brought in for his bat, with the Giants needing an upgrade in production out of left field. But with Morse's defensive shortcomings, Perez could fit as a late-inning defensive replacement, though Saturday brought added competition.

The Giants are likely to break camp with five outfielders. Angel Pagan and Hunter Pence are locks to roam center and right; Morse figures to get the majority of starts in left; and Gregor Blanco should be one of the first reserves off manager Bruce Bochy's bench.

The 27-year-old Perez, who spent the past five seasons in the Giants' system and is in his fourth big league camp, entered Spring Training considered the favorite to be the fifth outfielder.

"I'm aware of that, but I have to be ready and do my job," Perez said Saturday morning. "I have to hit the ball when I'm up and catch every ball I can when I'm in the field. I have a lot of chances, I think. I just have to do my job, take advantage of the opportunity I get playing-wise on the field."

Roger Kieschnick, known more for his bat than his glove, appeared to be Perez's top competition until the Giants signed Tyler Colvin to a Minor League contract early Saturday.

"It's not certain we'll go with five outfielders, [but] that's where we're leaning right now," Bochy said. "Ideally, you'd take a guy who's versatile, with the bat and defense. ... A lot of it will be determined by who we're playing and the game situation. On the whole, we definitely need a guy who is going to give us some defense."

The field is where Perez made his mark with the team a year ago and where he holds an advantage over the competition. Perez made a handful of highlight-reel catches in both left and center during his 34 games with the Giants.

But Perez hit just .258 with a .650 OPS during that late-season stint, and is a career .279 hitter in the minors.

"They know what I can do in the field," Perez said. "I take a lot of pride in that because I work hard on it."

At the plate, Perez said he wants to take the ball to the opposite field more often as well as drive it into the gaps.

Before news of Colvin's signing got out, Perez said he wasn't going to worry about any competition.

"This year is going to be different because last year I played in the big leagues," Perez said. "I just have to take what I did at the end last year and bring it over to this year."

Prospect Panik eager to continue development

SCOTTSDALE, Ariz. -- Joe Panik didn't hold back in assessing 2014's overall meaning to his career.

"I would definitely say it's a big year," the Giants' 2011 first-round Draft pick said.

The infielder is in his third big league camp as a non-roster invitee and isn't expected to compete for a roster spot this spring. But he is hoping to make the jump to Triple-A and perhaps make his Giants debut sometime during the year.

"You want to keep pushing forward and move through the organization, with the ultimate goal to get to the Majors," said Panik, who hit .297/.368/.402 with Class A Advanced San Jose in 2012 and .257/.333/.347 with Double-A Richmond last season.

"Every year you want to put your best foot forward and see what happens," Panik, 23, said. "I'm a lot more comfortable. I know all the guys pretty much and they know me. I can just go there and play ball now. I'm no longer the young guy. Guys know what I'm about, my work ethic, so I can just go out and play baseball now. That level of comfort makes it easier to play.

"We start games on Wednesday and that's going to be the true telling of what's going to happen."

Worth noting

Matt Cain threw his second live batting practice and Bochy liked what he saw.

"He threw well ... is using all his pitches," the manager said. "I like where he is at right now."

Right-hander Sandy Rosario did not participate in Saturday's workout because of sore legs, Bochy said. Rosario, a non-roster invitee, is expected back Sunday.

Chris Gabel is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.