ARLINGTON -- Mariners general manager Jerry Dipoto continued shuffling his bullpen on Monday, and this time the move involved another team as Seattle acquired right-hander Arodys Vizcaíno and lefty Jesse Biddle in a trade with Atlanta for veteran right-hander Anthony Swarzak and cash.

Biddle will join the Mariners in Texas, while Vizcaino is on the 60-day injured list after undergoing surgery on his right shoulder on April 17.

The Mariners have already used 20 relievers this season and rank 27th in the Majors with a 5.45 bullpen ERA.

The 27-year-old Biddle is 0-1 with a 5.40 ERA in 15 games with the Braves this season, with his ERA jumping from 2.38 after allowing four earned runs in one-third of an inning over his last two appearances before going on the 10-day injured list with a right thigh bruise.

Biddle was activated off the injured list last Tuesday before being designated for assignment on Wednesday, following a four-game rehab assignment with Triple-A Gwinnett.

¡°He¡¯s got a pretty good arm,¡± Mariners manager Scott Servais said. ¡°I don¡¯t know a ton about him other than he has a good fastball, curve and slider. Looking at the numbers, he had a pretty good year last year, was off to a rocky start this year. That¡¯s why guys are available. Hopefully we can bring him in and get him going in the right direction again.¡±

Biddle went 6-2 with a 3.46 ERA and one save in 75 outings for the Braves over the past two seasons, including a 3.11 ERA in 63 2/3 innings as a rookie last year. He was a first-round Draft pick by the Philles in 2010.

Vizcaino, 28, pitched in four games this season -- going 1-0 with one save and a 2.25 ERA -- before having season-ending surgery. He¡¯s posted a 13-11 record and a 3.01 ERA in 206 relief appearances over parts of seven seasons with the Braves and Cubs.

Swarzak was acquired by the Mariners from the Mets as part of the Robinson Cano/Edwin Diaz deal, and he was 2-2 with a 5.27 ERA in 15 outings, including 3-for-6 in save situations. He pitched well initially after coming off the injured list in early April, but he has allowed 11 runs (eight earned) with six home runs over 8 1/3 innings in his last nine outings.

Swarzak is earning $8.5 million this year, while Vizcaino is making $4.8 million and Biddle is near the MLB minimum at $575,000.

Both Swarzak and Vizcaino will be free agents next year, so Vizcaino¡¯s inclusion in the deal is primarily to equal the money exchange. The Mariners are also sending close to $2 million to the Braves to offset Swarzak¡¯s salary, according to MLB Network insider Ken Rosenthal.

Biddle is out of Minor League options, but he could potentially help the Mariners in the long term as he¡¯s under team control through 2023.

Milone to start against Rangers

Veteran left-hander Tommy Milone was with the Mariners on Monday and he will be added to the roster to start Tuesday¡¯s game against the Rangers in the rotation spot opened up by rookie Erik Swanson¡¯s demotion to Triple-A Tacoma last week.

Milone, 32, has a career mark of 42-37 with a 4.42 ERA over 151 games (130 starts) in seven seasons with five teams. He signed a Minor League deal with the Mariners in December and he has gone 4-2 with a 3.83 ERA in nine games (eight starts) for Tacoma.

Milone will need to be added to both the 25- and 40-man rosters. He signed with Seattle knowing there¡¯d be a chance for a promotion to the big leagues at some point this season, given Dipoto¡¯s rebuilding plans.

¡°After talking to Jerry and a couple of their guys, they made it clear there would be opportunities,¡± Milone said. ¡°Maybe not right out of Spring Training, but the middle of the year. And obviously, it¡¯s proved that a lot of guys have come and gone. I was telling myself to just stay the course, continue to battle and if things go right, I¡¯d be up here eventually.¡±

Milone had some good seasons with the A¡¯s in 2012-14 and he went 9-5 with a 3.92 ERA in 24 games (23 starts) with the Twins in ¡¯15, but he has struggled to stay in the big leagues the previous two years while splitting time between the Brewers, Mets and Nationals.

¡°For me it¡¯s a matter of getting back to being consistent on a game-to-game basis,¡± he said. ¡°For a few years, I just wasn¡¯t consistent. That¡¯s the biggest thing is going out and have the team rely on you that you can get the job done, and I¡¯m feeling good about that right now.¡±