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5/30/2014 6:48 P.M. ET

Alvarez gets extra rest for elbow, will start Tuesday

MIAMI -- Everything checked out and Henderson Alvarez is ready to make his next start. It just will be one day later than initially planned.

Marlins manager Mike Redmond said Friday that Alvarez's elbow is fine, and the right-hander will start on Tuesday against the Rays at Marlins Park.

Alvarez, who experienced some stiffness in his elbow during his start on Wednesday at Washington, was lined up to go on Monday. Instead, he will get one more day to prepare.

Randy Wolf is scheduled to start on Monday in the opener of the two-game series against Tampa Bay at Marlins Park.

"He was checked out by the doctor," Redmond said. "He will pitch on Tuesday. Wolfy will go on Monday."

Alvarez did some light throwing on flat ground on Friday afternoon and said he was fine. On Saturday, he will throw a 15-20 pitch bullpen session. Barring any setback then, he should be ready for Tuesday in the finale vs. the Rays.

"I'll throw a bullpen and I'll see how it feels," Alvarez said.

Alvarez threw five shutout innings at Washington on Wednesday in a no-decision at Nationals Park. Miami won, 8-5, in 10 innings.

During the outing, the righty expressed to pitching coach Chuck Hernandez and Redmond that his elbow was a little stiff.

The Marlins stressed the decision to pull Alvarez after 62 pitches was precautionary. Miami's rotation already took a major blow with the season-ending elbow injury to ace Jose Fernandez, who underwent Tommy John surgery a few weeks ago.

Although Alvarez is just 24, and this is just his fourth big league season, he is a major piece in the rotation. He opened the season in the No. 3 spot, and he is 2-3 with a 2.97 ERA in 11 starts.

The Marlins are confident at this point that Alvarez's elbow is not a serious issue.

Alvarez did note that his arm also didn't feel right at San Diego during his start on May 11. The right-hander said that day the discomfort was more in his biceps. At Washington, it was more of an elbow issue.

"Sore elbow throughout the course of that game," Redmond said. "That happens sometimes with pitchers."

Capps to get second opinion on elbow sprain

MIAMI -- Carter Capps' sprained right elbow will get a second look before the Marlins have a clearer picture about his long-term prognosis.

"He's headed in for a second opinion," manager Mike Redmond said. "He's going to be down resting."

An MRI exam taken Monday revealed a sprain. The Marlins have said Capps will be shut down from throwing for four weeks. At this point, the club is hopeful the reliever will avoid surgery. More will be known after Capps gets the second opinion.

Capps informed the team he had discomfort in his throwing arm after he threw one inning in the series finale with the Brewers on Sunday at Marlins Park.

He gave up one run, two hits and a walk and notched a strikeout in the inning. The Marlins placed Capps on the disabled list two days later.

Capps opened the season at Triple-A New Orleans, and he was called up on April 23. In nine appearances with Miami, Capps struck out 15 batters and walked three while compiling a 3.00 ERA. He was settling into more of a late-inning role. Now, the club is searching for replacements to step up.

While Capps will be out for a substantial period of time, there's some encouraging injury news regarding second baseman Rafael Furcal, who has yet to play for the team this season.

A few hours north of Marlins Park, Furcal was set to continue his rehab assignment for the Class A Jupiter Hammerheads on Friday. The 36-year-old went 0-for-3 on Thursday. It was his first game back since straining his right groin during a different rehab assignment in late April. He played seven innings on Thursday as he builds back up into game shape.

Furcal opened the season on the DL with a left hamstring strain.

"I think it's kind of a build-up, a progression. You gotta ease him into playing nine innings," Redmond said. "From what I've heard, everything's going as scheduled. Keep working him, keep getting him out there and see how he progresses."

Furcal missed all of 2013 due to Tommy John surgery. He hasn't experienced any elbow issues this year.

Marlins sign Colombian pitcher Olmos

MIAMI -- There currently are four Colombian-born players in the Major Leagues, and the Marlins have one of them in Donovan Solano.

Miami hopes to add at least another in the future.

On Friday, the organization signed 18-year-old right-hander Cristian Olmos. The paperwork was finalized at Marlins Park.

The Marlins are becoming more active in international signings, and in Olmos, they are hopeful they have a pitcher with upside. The 6-foot-2, 180-pounder throws 90-94 mph, and he has a promising curveball.

Olmos will start off playing in the Dominican Summer League, which begins on Saturday.

The Marlins faced Atlanta ace Julio Teheran on Friday. Teheran is also a Colombia native.

The other two Colombian players in the big leagues are pitchers Ernesto Frieri of the Angels and Jose Quintana of the White Sox.

Joe Frisaro is a reporter for MLB.com. He writes a blog, called The Fish Pond. Follow him on Twitter @JoeFrisaro. Maria Torres is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.