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6/30/2014 10:45 P.M. ET

Soto hoping to begin rehab assignment Friday

BALTIMORE -- Catcher Geovany Soto, who is on the disabled list after undergoing surgery on his right knee at the end of Spring Training, is with the Rangers in Baltimore, but is hoping to be with Triple-A Round Rock by Friday.

Soto is hoping to start his rehab assignment then and be back with the Rangers by the All-Star break. He will spend three days in Baltimore doing blocking drills and catching pitchers in the bullpen, the final steps needed before he is ready to play in a game.

"Hopefully I can get out of here if everything goes like planned in the next few days," Soto said. "So far everything is going great. My legs feel strong. I just need to catch some games, get a few at-bats and be back after the All-Star break if there are no setbacks."

The plan will likely call for Soto to alternate between catcher and designated hitter while he is in the Minor Leagues.

"I've passed pretty much every hurdle," Soto said. "Everything has been great so far. I just need to get my legs built up, get my timing and the plate and come back and help this team."

Preller to interview for Padres GM position

BALTIMORE -- Rangers assistant general manager A.J. Preller is on the list of candidates to be the Padres next general manager. Major League sources confirm that the Padres have permission to interview Preller and are expected to do so in the near future.

Preller is in his 10th season with the Rangers and has been one of general manager Jon Daniels' most trusted lieutenants. From 2010-13, he was in charge of the Rangers' professional, international and amateur scouting and helped rebuild the farm system.

The Padres are looking for a general manager after dismissing Josh Byrnes earlier in June. The Padres are currently 35-47 and in fourth place in the National League West.

Twin rough outings won't keep Soria down

BALTIMORE -- Rangers closer Joakim Soria had a rough weekend. He allowed five runs in two innings and Mexico lost in the World Cup. Mexico's loss was tough to take. Soria can handle the two rough outings against the Twins.

He allowed four runs in the ninth inning on Friday in a non-save situation against the Twins, but the Rangers held on for a 5-4 victory. He pitched the ninth inning on Sunday in a tie game and took the loss when Josh Willingham singled on a grounder up the middle and scored on an opposite-field double by Kendrys Morales.

"The first day the command of my fastball wasn't there," Soria said. "[Sunday], I felt like I made good pitches and they found holes. They are good hitters and they hit the ball in the right spot. Morales just dropped his bat and found a hole. He's a good hitter."

Soria had pitched 8 1/3 scoreless innings with seven saves in his previous nine appearances before running into trouble against the Twins. They also handed Soria his only blown save on May 27 in Minnesota. He has a 10.38 ERA against the Twins and a 1.54 ERA against all other clubs.

"Every pitcher, starter or even hitter has one team that gives them trouble," manager Ron Washington said. "Maybe Minnesota gives him trouble. The first game he had command issues. The second time, you've got to give Willingham and Morales credit. Their veteran players, they fought for their at-bat and they beat him. He got beat by two guys who have beaten a lot of people."

Soria is 15 for 16 in save opportunities and has a 0.59 ERA in those games. He has a 5.84 ERA in 13 non-save situations.

"I feel good, that's the important thing," said Soria, who became the Rangers closer in Spring Training after a two-year odyssey in recovering from Tommy John elbow reconstruction surgery. "My arm feels good."

New father Rosales called up to Rangers

BALTIMORE -- Infielder Adam Rosales spent the weekend in Cleveland, where his wife Callie gave birth to a daughter, Juliet. Rosales was planning to re-join Triple-A Round Rock on Monday, but instead found himself in Baltimore with the Rangers.

Rosales was called up when the Rangers decided rookie infielder Luis Sardinas needed to go play every day in Triple-A, rather than a couple of times a week.

Rosales was with the Rangers in Spring Training, but did not make the team, even though he went into camp as the favorite to be the utility infielder. The Rangers had other opportunities to call him to the big leagues, but passed him over until now.

"I wasn't focused on that," Rosales said. "I was just focused on playing every day, making adjustments and focused on winning. When you focus on winning, good things are going to happen, whether you are in Triple-A or the big leagues."

Rosales played 15 games at first base in Round Rock, giving him 143 for his Minor League career there. He has more experience at the position than Donnie Murphy, so he will likely be the Rangers right-handed option there on days when Carlos Pena, a left-handed hitter, sits against tough lefties.

Manager Ron Washington said Murphy will likely be the first option at third base if Adrian Beltre needs a day off and Rosales will be the first option at shortstop if Elvis Andrus needs a day off. Either one can fill in at second base for Rougned Odor.

Worth noting

• Triple-A pitcher Cory Burns was claimed off waivers by the Rays. The Rangers took him off the 40-man roster to make room for Adam Rosales. Burns was 2-2 with a 7.44 ERA in 20 games for Round Rock.

• The Rangers have signed pitcher Joe Filomeno, who was their 15th-round pick in the First-Year Player Draft, out of the University of Louisville.

• The Rangers went into Monday's game having played 81 games. That's exactly half the season and Adrian Beltre led them with nine home runs and 43 RBIs. He is on pace for 18 home runs and 86 RBIs. That would be the lowest home run total for the Rangers leader since Buddy Bell, Richie Zisk and Pat Putnam each hit 18 in 1978. The 86 RBIs would be the lowest since Bell and Dave Hostetler led with 67 in 1982.

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.