SAN DIEGO -- The Padres will be without one of their top relief pitchers as Mike Adams was placed on the 15-day disabled list on Friday with a strained left oblique muscle.
Adams has a 2.18 ERA in 42 games.
The Padres recalled outfielder Luis Durango to take Adams' place on the 25-man roster.
Adams suffered the injury after delivering a pitch in the Padres' final game before the All-Star break, on Sunday in Denver. He immediately grabbed his left side after throwing a pitch to Ian Stewart. Adams then left the game.
Adams was examined on Thursday afternoon prior to a workout at PETCO Park.
Durango, who has appeared in six games this season with the Padres, getting five hits in 13 at-bats, was hitting .292 with Triple-A Portland with 28 stolen bases.
The Padres also placed right-handed pitcher Mat Latos on the DL on Friday. Latos suffered an injury to his left side, possibly an oblique as well, attempting to hold back a sneeze.
Reliever Ernesto Frieri was added to the roster on Friday. Frieri had a 1.43 ERA and 17 saves with Portland and could end up pitching important innings right away.
GM would 'strongly' like to add pieces
SAN DIEGO -- General manager Jed Hoyer has every intention of making a deal or two to improve the first-place Padres and bolster their chances of making the postseason.
"I would strongly like to make a move ... not a cosmetic move but one to make the team better," Hoyer said.
The time to make such moves, apparently, might be closer to the July 31 Trade Deadline than it is today.
Hoyer, in meeting with reporters before Friday's game against the Diamondbacks, said the "asking price has to come down to make a deal."
Hoyer said the Padres, who enter the second half with a two-game lead in the National League West, could possibly add a position player and a pitcher before the non-waiver Trade Deadline.
"We're not limited to one," Hoyer said. "We're casting a wide net. We have the resources to add multiple."
Hoyer, who wouldn't acknowledge which piece is the bigger priority, did say the team needs to "add some innings between now and the end of the season."
The Padres have received numerous inquiries about their top Minor League pitchers -- with Simon Castro, Cory Luebke and Ernesto Frieri drawing most of the attention.
"Teams are always looking for arms," Hoyer said.
Frieri, who had 17 saves and a 1.43 ERA with Triple-A Portland, joined the Padres on Friday when reliever Mike Adams went on the 15-day disabled list with a left oblique strain.
Frieri travels far, wide to return to bigs
SAN DIEGO -- The road back to the Majors for the longest-tenured player in the Padres organization was a long one for reliever Ernesto Frieri.
After traveling from Portland to Allentown, Pa., for the Triple-A All-Star Game this week, Frieri quickly got word that he needed to pack his bags again for another cross-country trip before even throwing a pitch, because he was being promoted to the big league club.
Frieri didn't mind that he didn't get a chance to take the mound in the All-Star Game, or the six-hour flight from Philadelphia to San Diego.
"No big deal," he said. "It would have been fun to pitch [in the All-Star Game] because it was a full house over there, but I'm here in big leagues right now.
"This is amazing. To be a part of this team and this bullpen right now is something great for me. I'm really proud and glad to be here."
Frieri, who signed with the Padres in 2003 at 17 and made two appearances in the Majors as a September callup last season, had a 1.43 ERA with 17 saves as the closer for Triple-A Portland this season. He has allowed 14 hits and six earned runs in 37 2/3 innings while striking out 49 and walking 18.
Padres manager Bud Black said Frieri, whose fastball normally runs in the low 90s and who also throws a "slurve" and changeup, could be used in a similar role as Ryan Webb when he was first called up this season.
"All those guys [in the bullpen] that we've run through there have carried their weight, and we want to make sure that when he's called upon that he does his job," Black said. "That's what I expect. He's been in big league camp, he knows me, he knows the coaches, so it's an easier transition for him, I think, in that regard, but the true test is on the field,"
Frieri also said he plans to use his stint with the big league club to learn a thing or two from what many regard as baseball's best bullpen, which entered Friday leading the Majors with a 2.84 ERA.
"Whatever they're doing over here, it's working," Frieri said. "I'm going to ask questions. I always talk to Heath Bell and Mike Adams, so I'll just try to get something from them and put it into my game."
Break allows Eckstein to return to lineup
SAN DIEGO -- Padres second baseman David Eckstein was back in the starting lineup for Friday's series opener against the D-backs after missing seven consecutive starts before the All-Star break with a strained calf.
Eckstein, who hit in his normal No. 2 spot in the batting order on Friday, said the injury gradually improved throughout the Padres' road trip last week and that the All-Star break provided the perfect time for it to heal completely.
"To have an opportunity to actually rest it felt good, and I feel really good right now," Eckstein said. "We'll see tonight."
Eckstein said he first felt tightness in his calf on July 3 against the Astros when he legged out an infield single in the first inning. He said going on the 15-day disabled list was discussed toward the end of last week and that a move likely would have been made if he wasn't 100 percent healthy by Friday.
"I had to be ready to play for tonight," Eckstein said. "If I wasn't ready for tonight, it probably would have been a DL stint."
Jerry Hairston Jr. started all seven games at second base in Eckstein's place, going 10-for-31 (.323) with a home run, two RBIs and five runs.
Prospect Cumberland injures knee
SAN DIEGO -- Double-A San Antonio shortstop Drew Cumberland, who played in Sunday's Futures Game in Anaheim, suffered an injury to his left knee Thursday when he slid into a cement wall attempting to catch a foul ball.
Cumberland will fly to San Diego on Monday to have his knee examined by the team medical staff.
Mike Wickham, the Padres' director of Minor League operations, said Cumberland had been playing well at the time of the injury.
Cumberland is in the midst of having a breakout season. The 21-year-old hit .365 in 60 games for Class A Lake Elsinore with a .404 on-base percentage before being promoted to San Antonio.
Cumberland was hitting .278 in his first 15 games with the Missions before the injury.
"He's adjusted great," Wickham said. "He's an all-field guy who keeps the ball on the ground and uses his speed."
Between Lake Elsinore and San Antonio, Cumberland -- the 46th overall pick in the 2007 Draft -- is hitting .350 with a .385 on-base percentage, seven home runs, 41 RBIs and 21 stolen bases.
Corey Brock is a reporter for MLB.com. Gina Mizell is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.