Mariners acquire Wade Miley from Red Sox in 4-player deal

The Mariners and Red Sox have agreed to a 4-player trade that will send pitchers Wade Miley and Jonathan Aro to the Mariners for Carson Smith and Roenis Elias, according to Jon Heyman of CBSSports.com. The completion of the deal was first reported by Ken Davidoff of the New York Post.

After losing Hisashi Iwakuma to the Dodgers on Sunday, the Mariners had to turn elsewhere in their search for starting pitching help. Boston had a surplus of pitching after signing David Price this week, and decided to trade Miley only one year after acquiring him from Arizona.

Miley, 29, will slot in behind Felix Hernandez and Taijuan Walker in a rotation mix that has already added Nathan Karns this winter and includes James Paxton, Vidal Nuno and Mike Montgomery as other options. Miley is an innings-eater who pitched 193.1 innings for Boston last season, posting a 4.46 ERA in 32 starts.

Aro, 25, broke into the majors last season, posting a 6.97 ERA in six appearances for the Sox. He made 41 appearances in Boston's minor-league system last season, earning a 3.08 ERA.

Smith, 26, is the latest addition to a Red Sox bullpen that already added Craig Kimbrel this offseason. The 6-foot-6 right-hander has been very solid so far in his major-league career, posting a 2.07 ERA in 79 appearances, and is likely to serve in the 7th-inning role in front of Koji Uehara and Kimbrel.

Elias, 27, gives the Red Sox an additional rotation option after posting a 4.41 ERA in 22 appearances (20 starts) last year. Boston currently has Price, Clay Buchholz, Joe Kelly, Rick Porcello and Eduardo Rodriguez slotted into rotation spots, so Elias will provide additional depth.