Kelley (calf) will begin a rehab assignment Friday with High-A Lake Elsinore, Jeff Sanders of the San Diego Union-Tribune reports.

Kelley threw a 25-pitch bullpen session Wednesday without incident and reported he was ready to begin a rehab stint shortly afterward. He'll likely need to appear in a few rehab games, but a return as soon as he's eligible to come off the disabled list on May 7 seems to be within reach.

Kelley (calf) threw off a mound to live hitters Monday, Corey Brock of MLB.com reports.

Kelley was placed on the 15-day DL with a left calf injury Friday, so it's an encouraging sign that he's already been able to resume throwing.

Kelley was placed on the 15-day DL on Friday with a left calf injury, Padres announcer Bob Scanlan reports.

He had been pretty brutal in the early going, posting a 10.13 ERA in 5.1 innings. Kevin Quackenbush was recalled to replace him in the Padres' bullpen.

Kelley gave up three earned runs and walked two batters in just 0.2 innings of relief work Sunday against the Diamondbacks.

Kelley has made three appearances so far this season, allowing opponents to get on base 50 percent of the time and allowing a slugging percentage of .929.

Kelley allowed three runs, two earned, with two walks and a strikeout over 1.1 innings to take the loss Monday against the Dodgers.

Kelley came on with two outs in the seventh and finished the inning by inducing a groundout from Juan Uribe. He ran into trouble in the eighth, however, walking the leadoff batter and then committing an error, which allowed Jimmy Rollins to come to the plate with two men on. Rollins homered to right to give the Dodgers the lead. Kelley was the third reliever to appear after Nick Vincent and Frank Garces.

Kelley has allowed three earned runs and seven hits over 4.2 innings of work this spring.

Kelley was roughed up in his first outing, allowing four hits, including a two-run home run, in just a third of an inning of work. He has been better since then, allowing just one earned run and two walks over 4.1 innings. Kelley is a likely candidate for the seventh or eighth inning role in San Diego's bullpen.

Kelley and the Padres agreed to a one-year, $2.835 million contract to avoid arbitration, his agent announced.

Kelley is poised to occupy a spot in the back end of the Padres' bullpen. Even though his 4.53 ERA last season wasn't impressive, his 3.02 FIP indicates he was the victim of some brutal luck and could be a pleasant surprise for the Padres. After 2015, the 30-year-old will be a free agent.

Kelley was traded to the Padres on Monday, Chris Cotillo of MLB Daily Dish reports.

Kelley was moved in exchange for a prospect arm in Johnny Barbato. The 30-year-old finished the 2014 season with 3-6 record with a 4.53 ERA, 1.26 WHIP and 67 strikeouts over 51.2 innings. He will likely serve in a middle relief role for the Padres in 2014, but could also earn some late-inning appearances with a strong spring training.

Kelley picked up the loss Wednesday to Baltimore to fall to 2-4 on the season with a 4.74 ERA.

Kelley struggled, giving up three runs in just two-thirds of an innings. The 30-year-old hasn't had much success of late, allowing four runs while retiring just one last week against Cleveland. After Wednesday's loss, his ERA stands at 13.50 for the month of August.

Yankees activated RHP Shawn Kelley from the 15-day disabled list.

Kelley will be back in the Yankees' bullpen on Wednesday after missing five weeks with a back injury. The righty had a 3.52 ERA in 15 1/3 innings before the injury.

Shawn Kelley (back) is aiming to return to the Yankees' bullpen on Wednesday.

Kelley will make one more rehab appearance with Double-A Trenton on Monday before rejoining the big club. He's been on the shelf since May 7 due to stiffness in his back.

Shawn Kelley (back) could be activated from the disabled list on Monday.

Kelley struck out two and walked one over two-thirds of an inning in a rehab appearance for Double-A Trenton Saturday. "I think you have to look at how the ball was coming out," Yankees manager Joe Girardi said Saturday. `Was his velocity there? Was his slider sharp? Those sort of things. Sometimes it's more than just what the numbers say. Does he need another? We'll probably have a little better idea after today."

Shawn Kelley (back) will begin a minor league rehab assignment with Double-A Trenton on Saturday.

Kelley has been on the shelf since May 7 due to stiffness in his back. He's likely to make at least two appearances in minor league games, and if all goes well should rejoin the Yankees bullpen at some point next week.

Shawn Kelley (back) is expected to pitch in a simulated game on Wednesday.

If it goes well, he could be cleared for a minor league rehab assignment Friday. The right-handed setup man has been out since May 7 with a back injury. He should be able to rejoin the Yankees' bullpen early next week.

Shawn Kelley (back) threw 20 fastballs and five sliders in the bullpen at Yankee Stadium on Saturday, his first time on the mound since his back locked up following an outing against the Angels on May 6.

Kelley is scheduled to throw another bullpen session before going on a brief rehab assignment in the minor leagues.

Shawn Kelley (back) played catch from 75 feet Monday with no issues.

It's a nice step, but it's not clear when Kelley will progress to mound work. The reliever is expected to be sidelined for another couple weeks.

Yankees manager Joe Girardi said Saturday that it would be "pretty close" to another two weeks before Shawn Kelley (back) returns from the disabled list.

Kelley woke up with more stiffness in his back on Tuesday and hasn't thrown since. The setback means that he'll require an additional rehab game or two plus the bullpen sessions that were already planned before being activated. The reliever hasn't pitched in a game since May 6.

Shawn Kelley (back) is expected to return from the disabled list next week.

He was initially expected to return on Sunday, though a recent setback due to back stiffness has pushed his return back a couple of days. He has been sidelined with the back issue since early May.

Shawn Kelley's (back) rehab has been halted after he woke up with stiffness Tuesday.

Tests on Kelley's back are coming back clean, but he hasn't been able to get over the hump. It's not clear at this point how long he'll be shut down. The reliever has been sidelined since early May.

Yankees placed RHP Shawn Kelley on the 15-day disabled list, retroactive to May 7, with a back injury.

Kelley was expected to be available Monday night, but Yankees manager Joe Girardi said after the game that he wasn't ready yet. He has already been sidelined for a week, so he'll be eligible to return late next week if he can get back on track physically.