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8/5/2014 12:59 A.M. ET

Prospects Alfaro, Mazara earn promotions

CHICAGO -- The Rangers have promoted two of their top prospects to Double-A Frisco. Catcher Jorge Alfaro is moving up from Class A Myrtle Beach, and outfielder Nomar Mazara is jumping from lower Class A Hickory.

Alfaro, 21, is the Rangers' No. 2 prospect as ranked by MLB.com, and 39th overall. He was hitting .261 with 22 doubles, five triples, 13 home runs and 73 RBIs at Myrtle Beach. He had a .318 on-base percentage and .440 slugging percentage. He played in the All-Star Futures Game in Minnesota last month and was just named the Carolina League Player of the Week. He also showed significant improvement defensively, which is what the Rangers wanted to see.

"In Alfaro's situation, we put together a plan to challenge him, and if he thrived within that context, we would promote him to Double-A," assistant general manager Thad Levine said. "He did."

Mazara, 19, is ranked 10th in the Rangers' system and was hitting .264 with 21 doubles, 19 home runs and 73 RBIs. He has a .358 on-base percentage and .470 slugging percentage.

"He has been one of the most productive hitters in our farm system and one of the most mature," Levine said. "He rose to the occasion."

Carp open to any opportunity with Rangers

CHICAGO -- Mike Carp joined the Rangers on Monday and was immediately inserted into the lineup, starting at first base and batting fifth against White Sox right-hander Hector Noesi. Carp, a left-handed hitter, can also be used at designated hitter and left field, but it appears he will get much of his playing time sharing first with J.P. Arencibia.

"We'll get him out there when we can, move him around and try to get his bat going," manager Ron Washington said. "It will probably take some at-bats to get going, but we know we can hit."

Carp, who spent his first four Major League seasons with the Mariners, spent the past two with Boston. He was a productive role player in 2013, when the Red Sox won the World Series, hitting .296 with nine home runs, 43 RBIs and a .523 slugging percentage in 86 games and 216 at-bats.

But he wasn't getting as much playing time with the Red Sox this season -- missing all of June with a broken foot didn't help, either -- and was hitting .198 with a .320 on-base percentage and .279 slugging percentage in 42 games and 86 at-bats.

So as the July 31 non-waiver Trade Deadline approached, he asked for a trade.

"Playing once a week, it's hard to stay sharp," Carp said. "The opportunities were few and far between, so it led to an unfortunate situation. It just came down to playing time. I just wanted to go out and compete. It's frustrating not to be able to do that, and lose on top of it.

"I'm comfortable with whatever opportunity comes my way. It will be better than what I had in Boston. I've got two months to figure it out and get back on track."

The Rangers were able to make room for Carp on the roster because catcher Chris Gimenez is away on paternity leave. His wife, Kellie, is about to give birth, and he can be away for up to three days.

Gimenez could be ready to return by Friday, when the Rangers open a three-game series with the Astros in Houston. But the Rangers are also expecting Geovany Soto to come off the disabled list that day as well.

Holland struggles in second rehab outing

CHICAGO -- Derek Holland's second rehab outing as he recovers from offseason surgery on his left knee didn't go quite as smooth as his first one did.

Pitching for Triple-A Round Rock on Monday, Holland allowed four runs in just one inning against Memphis. He gave up four hits, walked one and struck out three. He was supposed to go three innings and 50 pitches but did not come out for the second inning after throwing 42 pitches.

"I just had bad fastball command," Holland said. "Everything else was working great. I couldn't command my fastball the way I wanted to. I got behind in counts, and then they got some good pitches to hit when I was behind in the count.

"The knee feels good. There's no pain or anything like that. It feels strong. The only thing I'm upset about is me not being able to command my fastball, because I'm better than that. At the same time, I've got to realize that I am coming off a knee surgery, and I'm making adjustments to hitters in real games."

Holland will likely start again on Saturday, this time for Double-A Frisco. He pitched two scoreless innings for them in his first rehab start, last Wednesday.

Adduci fulfills childhood dream with start in Chicago

CHICAGO -- Outfielder Jim Adduci achieved his childhood dream with his start in left field on Monday night. Adduci grew up on the South Side of Chicago, a White Sox fan, and was playing in U.S. Cellular Field for the first time as a pro.

He played here in a high school All-Star game. His high school, Evergreen Park, is about five miles south of U.S. Cellular.

"It's like being at home," Adduci said. "I came here as a kid to watch games. To play in a Major League game here is an awesome feeling. Just being on the field early today was an awesome feeling. I grew up watching Paul Konerko play. It's awesome."

Adduci was drafted by the Marlins in the 42nd round of the 2003 First-Year Player Draft and traded to the Cubs three years later. He spent six seasons in the Cubs system before signing with the Rangers as a Minor League free agent after the 2012 season.

His father, Jim, was also a Major Leaguer, and last played in 1989, for the Phillies.

Worth noting

• The Rangers have confirmed that Nick Tepesch will return to the rotation and pitch on Wednesday against the White Sox. Tepesch's last start was skipped because of soreness in his left knee, but he said he is close to 100 percent after throwing two bullpen sessions while the Rangers were in Cleveland.

• The Rangers promoted pitcher Alex Claudio from Double-A Frisco to Triple-A Round Rock after he went 2-2 with a 2.17 ERA in six starts and two relief appearances. Frisco filled his spot by activating pitcher Wilmer Font off the disabled list.

• Sunday marked the sixth time since the start of the 2013 season that Yu Darvish has pitched at least seven innings, allowed one run or fewer and still not gotten a win. Only two Major League pitchers have had more such outings in that time: Felix Hernandez (10) and Matt Cain (seven).

T.R. Sullivan is a reporter for MLB.com. Read his blog, Postcards from Elysian Fields and follow him on Twitter @Sullivan_Ranger. This story was not subject to the approval of Major League Baseball or its clubs.